RB Racing LSR 2-1 Pro Stock for Harley-Davidson

LSR Pro Stock 2-1's

Pure Race Systems with Baffle! Sophisticated 15 Degree Merge Collector Maximizes Power

2. Look Up Heat Shields for your bike: Heat Shields
Note: We make full coverage LSR 2-1 Pro Stock Heat Shields..Both ports and Merge Collector to end of the exhaust

1. Show Chrome: The brightest chrome, the "Hexavalent" process, has been outlawed in California since January 2024. Chemicals in the Hexavalent process can be cancerous to chrome shop operators, not the end consumer. The currently legal "Trivalent" chroming process has a darker hue and does not visually "pop".

Our chrome shop of 26 years finally shut down their Hexavalent plating line in 2024 in spite of having a two year extension to operate.

We are working with a new chrome plater, in business for many decades, who still uses the Hexavalent Show Chrome process and understands motorcycle exhausts.

All LSR 2-1 Exhausts and heat shields are mirror polished and plated with Hexavalent Show Chrome.

2. Silver Ceramic: Looks like polished aluminum, Can be re-buffed with Mothers Magnesium & Aluminum Polish. Will not "Blue" and will not come off or rust. Holds in heat. Usually used with chrome or silver heat shields. Fired twice @ 600F. Zero problems in more than a decade. Not internally coated and no internal media contamination as exhausts are sealed during the process.

3. Dual Coat Black Ceramic: Silver Ceramic base with secondary coat of Black Ceramic. Fired three times @ 600F. Only black Finish that will hold up. Zero problems in more than a decade. Not internally coated and no internal media contamination as exhausts are sealed during the process.

What is the "Best 2-1 Harley Performance Exhaust"...Everyone asks this question. "Best" is relative and depends on the individual. There is no "Best" that fits everyone which is why we have so many options. For us "Best" means simply we have tested the designs over the years and they have been proven by our customers and our own testing to"win"...Win what? Well they sound better. They provide big dyno numbers. They work at the track. They hold up as the years roll by and people are happy. That's a win.

History and Options

We started making 15 Degree merge collector Pro Stock 2-1 systems more than two decades ago and nothing has worked any better.

15 Degree Merge Collectors, no aluminum butt plugs, no reverse lip megaphones, no multi-step primaries, just clean designs.

Dyno, track and Land Speed Racing proven. They are designed to run without a Baffle...

There are three variations:

1. 00-1306 Challenge with short 2.5" secondary. Optional 00-1417 Welded-In Machined 2.250" Baffle.

2. 00-XXXX Longer 2.5" secondary (to rear axle). Specific four digit part number. Optional 00-1417 Welded-In Machined 2.250" Baffle.

3. 00-1306R with 2.5" I.D. 4" Diameter Resonator for wide open Db reduction. The Resonator is effectively the "Baffle"

Back Pressure Myth

Watch the video and then next time your "Tuner" says you need more back pressure you can refer him to this video

Pro Stock LSR 2-1 FLT/H Sleds

Twin Cam Dresser Dyno...Panhead Andy

00-1306R M8 Touring

Ultimate M8 Performance Bagger Exhaust: LSR 2-1 Pro Stock 00-1306R in Silver Ceramic with three Silver Ceramic heat shields for maximum heat rejection for the rider. Wide open race system with some sound attenuation.

00-1306 is LSR 2-1 Pro Stock 2-1 Challenge , short, without the "R" Resonator.

Big Engine M8: 2" primaries, four O2 ports, a 2.5" secondary (2.375" I.D.) and a Silver Ceramic 3.5" O.D. Stainless Steel resonator (2.5" I.D.) for decibel reduction. Collector for maximum ground clearance.

We've been making 00-1306 LSR 2-1 Pro Stock Pipes with full 1 3/4" and full 2" primaries for Baggers way before anyone got the bright idea of racing these couches.

The bike above completed a 2200 mile run and the pipe looked exactly the same as when it was installed

Pro Stock LSR 2-1 1306R S&S T143

LSR 2-1 Pro Stock 1306R for a S&S T143 with B3 Integral Two Bolt rotating Flanges and machined billet gaskets. We have specialized LSR 2-1 fixtures for the S&S T143 as well as S&S B1 and S&S B2 variants, plus the taller (1")145" Tribute motors.

This LSR 2-1 Pro Stock 1306R for a T143 Bagger is headed for a Florida customer who waited 14 weeks for a D&D that never showed up. We delivered in 4 weeks from time of order.

We also offer LSR 2-1 Pro Stock Spyders for the T143 that go to the back of the bag.

Born Every Minute As They Say: LSR 00-1306R Versus $3200.00 Black Burns Stainless 2-1

The Black M8 Dresser pictured above runs with our LSR 2-1 00-1306R with full coverage heat shields. Shields and Exhaust in Silver Ceramic. A 2020 M8 Dresser with 128 kit and cam. Maximum full race performance.

You can spend upwards of $3,200.00 for a, new to the market, Burns Stainless black megaphone 2-1 exhaust with only an abbreviated heat shield ($185.00) and no long term history in terms of pipe mounts or over the road long term durability. Also not available in chrome. Whoever chose that bend radius flunked aesthetics 101.

For about the same money you can get a competition and dyno proven LSR 2-1 00-1306R Pro Stock in dual coat black ceramic, silver ceramic, or full chrome, with full coverage heat shields, a TTS MasterTune, a TTS Camshaft and a RSR Dual Display AFR Gauge for, as you ride, monitoring to perfect your tune. Full 2" primaries, billet gaskets, and CNC machined turbo venturies. No flat gaskets that mush into the port.

We tried megaphones 30 years ago. They are a waste of time. It's old tech for Norton Manx's and pukka 1950's English bikes. There are no megaphones on any race cars...formula, GP, WRC Rallye, NASCAR...Nowhere. 46 years of this shit. We've seen it all. Stepped primary tubes are for clowns.

Born every minute as they say. On the other hand maybe we should raise prices to $3,200.00 since every minute there is a new one born.

Anatomy of a Racing Bagger Exhaust

LSR 2-1 Pro Stock 1306R : i.e. Our 00-1306 Pro Stock Challenge with Db reducing resonator. TC 124" S&S Dresser headed for Dual Coat Black Ceramic Coating.

Full 2" Primaries 27" Rear, 32" Front with 19" Secondary. CNC Billett Turbo Venturies exit 1.800" into 1.875" I.D. of 2" Primaries.

2.500" O.D., 2.375" I.D. Secondary with Resonator 2.500" I.D. Length 20". Total Rear Pulse 47". Total Front Pulse 52".

Termination Rear Axle. No bag heating issues.

Rear Primary slip joint. Front Primary Slip Joint.

Since 1978 building rubber-mounted Harley FL exhausts and brackets that do not break....Shovels to M8's.

Twin Cam Dresser: Extended & Closed Bags..,1306R w/45 Deg Turn Down

Custom made for a 131" 2012 Twin Cam Bagger that has extended, lowered, and closed bags. Wide open Pro Stock, zero restriction, with sound attenuation. Resonator hidden under the bags. Sweep the streets.

Speed Merchant Mid Peg LSR 2-1 Pro Stock M8 Dresser Designs

Speed Merchant 00-1306R

LSR 2-1 Pro Stock design for Speed Merchant Mid Peg M8 Bagger Conversions: 2" Primaries, 15 Degree Merge Collector.
Pro Stock 1306R in Dual Coat Black Ceramic. Four heat shields (not shown). Has both 12mm and 18mm O2 ports.

Also available in LSR 2-1 Pro Stock Spyder and LSR 2-1 Black Hole Designs.

Speed Merchant 00-1306

LSR 2-1 Pro Stock design for Speed Merchant Mid Peg M8 Bagger Conversions: 2" Primaries, 15 Degree Merge Collector. Four Heat Shields.
00-1306 Challenge. Available in Chrome, Silver Ceramic, Dual Coat Black Ceramic finishes.

Baggers Get Air with 00-1306...15 Years before King of the Baggers

Danny Arnold, Doc's Harley Davidson writes: " Thank you guys for the (00-1306) Challenge Pipe for my Bagger. It works! Better HP and TQ numbers than ever before. I was able to trim time off my ET and had better MPH. My bike is an 02 FLTRI with a 107". It's my daily rider and is the #1 plate holder with the AMRA in the D Class and is also the record holder all the way across the board thanks to you! Thanks again."

We have been building Bagger Race exhausts for way over 20 years...Shovels, Evos, Twin Cams, and M8's. 15 Degree Merge Collectors...with or without a Resonator.

All M8 LSR 2-1 Exhausts: Dual O2 Sensor Ports 12mm and 18mm

All Milwaukee 8 RB Racing LSR 2-1 exhausts have both 12mm and 18mm O2 ports. We recommend you stay with the 12mm O2 control and use TTS MasterTune. Some Dyno shops will retain the 12mm O2 sensors but want a wideband port to assist in tuning. Some people drink the purple Kool-Aid and run only wideband sensors. Whatever you want to do.

For 12mm O2 applications we recommend using TTS MasterTune and buying our RSR Dual Air Fuel Ratio Gauge (Two 18mm Sensors) to monitor your bike as you ride where you can observe transitions , cruising, and wide open throttle air fuel ratios visually. Instant information in the real world. Better than the dyno as you ride in the real world not overheating the engine on the dyno.

Also, if you have a Twin Cam that came with 12mm O2 ports, we can also put in the 18mm at no charge.

00-1306 M-8 Nitro Pro Stock Challenge and M8 00-1306R Nitro

We also can make a 00-1306 Pro Stock Challenge LSR 2-1 "Nitro" exhaust with a "Kick" to keep the exhaust at 45 degrees rotation. All the new M-8 models have better cornering clearance anyway. The standard 00-1306 also clears the bags with plenty of space.

No baffle. Full race. Standard with 12mm and 18mm oxygen sensor bosses (no charge).

15 Degree Merge collector. Two inch primaries. Billet flanges and clips, billet gaskets and three heat shields. This exhaust is going full Dual Coat Black Ceramic, both exhaust and shields which is the most popular choice.

S&S T143 with B3 Heads

143 Cubic Inches for your Dresser. Another way to spend $10,000.00 to $15,000.00 to climb the Horsepower mountain. We are making exhausts for these with our integral two bolt B3 flanges. The exhaust port dimensions are not OEM Harley. There are slight variations between the B1/B2 and B3 S&S heads.

We have made custom parts for these two bolt T143 B3 cylinder heads. Available for the four product ranges we manufacture...Quiet (LSR 2-1 Black Hole) to Full Race (LSR 2-1 Pro Stock). All use 2" primary tubes.

The new two bolt LSR 2-1 B3 Flange is integral, free rotating, to the exhaust port. Full tapered cnc machined venturi for 2" primary tubes. 1.875"ID.

Uses a machined 1.875" I.D. Billet Aluminum Gasket.

Belts won't last on these 143T motors so we offer chain drive/swingarm conversions for 09 and later Baggers. Used by S&S on their T143 test bike.

S&S SA B1/2/3 Heads

We have been asked by customers to provide LSR 2-1 exhaust systems for B1 / B2 / B3 heads originally found on EVO and 145" S&S Tribute engines and later T143 engines. Early B1/B2 four bolt flanges. Later B3 use two bolt flanges.We make both. The diagonal dimensions are the same two to four bolt patterns.

We have LSR 2-1, LSR 2-1 Pro Stock, LSR 2-1Pro Stock Spyder and LSR 2-1 Black Hole designs for these three S&S cylinder head variations.. Pictured above are our laser cut flanges and cnc machined hour glass shaped venturis that we heliarc to the B1 / B2 / B3 LSR 2-1 exhaust systems.

We have a specific fixture for the Twin Cam 126 S&S and T143 SAB2 / SAB3 Twin Cam Dresser systems as the billet cam cover is not OEM.

We also have a special fixture for the 145" S&S Tribute Engines.

00-1306 Pro Stock Challenge...White Hot Flames

Customer writes: "The addition of the LSR to this built 110” twin cam made the bike have much more torque and throttle response !! It sounds incredible kinda like a top fuel at idle. I love it !! The guy on the ditch side not so much!! Colin."

Customer writes: " Love our RB Racing LSR 2 into1's" Jonathan.

Semper Fi Times Three

Customer writes: "2000 FLHTCUI bought new 18 years ago. I put a SE 95" Big Bore kit on it after 6 months and a nice set of Samson slip-on's. I decided the old pipes had to go, so I bought my third set of LSR 2-1 Pro Stock Pipes. That says it all, I really like these pipes. I'm not a racer, my bikes aren't highly modified, I like the looks of the pipes, the sound is second to none, and they are easy to install. Here is a picture of the Ultra with the new pro stock.

Also, I've added pictures of the three bikes together together. 2008 FXDWG, 2000 FLHTCUI, and a 1984 FLHS with the red reserve tank on back. When I need another exhaust, I will definitely call LSR for another pro stock. It is a pleasure to be a customer. Rick".

As they say in the military "It takes three to make a formation". LSR 2-1 Pro Stock Systems in Double Coat Black Ceramic.

00-1155 Street Glide Pro Stock

Customer writes: "First I wanted to thank you for your patience and help. Secondly, here is a short video of the RB Pro-Stock 00-1155 installed on my 2013 Street Glide. The pipe woke the already mod'd engine up (along with the neighbors). I've got a sh#t eaten grin on me face. Thank you and the boys for a great pipe!! Taylor."

143 Hp Bagger

Customer writes: "Attached are pictures of my 2009 Road King with a 00-1306 Pro Stock Challenge W/ 2" primaries. The motor is a 117" W/ SE Hurricane heads producing 143 HP & 141 Torque. Thanks for a great exhaust.

150 Hp Bagger

Customer writes: "Here is a pic of my 98 road glide with a S&S 124 B-2 head engine (see SA B2 pictures below) and your LSR 2-1 Pro Stock 124 challenge pipe. The bike is 250i dyno tuned to 150 hp and maximum torque. This pipe is my 3rd pipe I have purchased from your shop, the other 2 pipes were LSR 2-1 C style and the sound and power these pipes make are number one. I honestly don't know why anybody would buy anything else. I will run RB Racing pipes as long as I ride. Thank you for such a awesome product.......Randall".

Road Glide

LSR 2-1 Pro Stock in Silver Ceramic on a Road Glide.

Customer writes " Hi, sending a photo of the Pro Pipe installed on my Road Glide. (Purchased pipe through Heritage Harley Davidson, PGH, PA) Love it! PLENTY OF GOOD COMMENTS! Thanks for a great product! PS - I know that dyno numbers don't mean everything, but here they are for a 95c.i.: 107.5 Hp 105 Torque."

Pro Stock LSR 2-1 Softail

00-1306 Pro Stock Challenge FXDR 132"

00-1306 Pro Stock Challenge FXDR 132" Robert Berry's new M8 bike...hell of a rider.

First test pass 6.3 Seconds in the 1/8 which equates to a 9.5 second 1/4 Mile.

2024 SDBA Track Champion

FXDR 132 C.I.D. LSR 2-1 Pro Stock Challenge 00-1306. Quarter Mile Win : 9.646 @ 138.23 mph. Alphonso "Showtime" Thompson with victory cigar.

Burnout Cycles 2024 SDBA Track Champion

Nine Outlaws with the gold. Ronnie and Zundra Readus and Aphonso "Showtime" Thompson...

Fast Ronnie 00-1306 Twice

Customer Writes: " FastRonnie's 2019 FXDR & Pro Street Breakout. With RB Racing Pro stock Racing 2 into 1 Pipes. FXDR Run 9.60's 138 MPH In The 1/4 Mile. FXSE Run 10.20's 126 MPH In The 1/4 Mile. Just My Every Day Street Bikes.

00-1306R ....CVO

Customer Writes: " New pipe looks great Bob, sounds epic too, just need to get it back on the dyno for a tidy up with the tune.

Regards, Matt.

00-1306R Dustin... Brother Speed Motorcycle Club

Customer Writes: " Hello I have been running my rb racing exhaust for the last year and absolutely love it .I have been competing in local drag racing events with this bike and how this pipe performs, sounds , and has held up in comparison to others is amazing.

I am pushing about 160 hp as well as 160 lb-ft with smooth acceleration and no hard dips in my tune like I saw with other exhausts plus I get compliments on how it looks quite frequently thank you again. Dustin BSMC.”

Born Every Minute As They Say: LSR 00-1306R Versus Burns $3200.00 Stainless 2-1

You can spend upwards of $3200.00 for a, new to the market, Burns Stainless megaphone 2-1 Black exhaust with only one abbreviated heat shield and no long term history in terms of pipe mounts or over the road long term durability. No broken pipes or mounts.

For about the same money you can get a competition and dyno proven LSR 2-1 00-1306R Pro Stock in dual coat black ceramic with full coverage heat shields, a TTS MasterTune, a TTS Camshaft and a RSR Dual Display AFR Gauge for, as-you-ride monitoring, to perfect your tune. Full 2" primaries, billet gaskets, and CNC machined turbo venturies.

We tried megaphones 30 years ago. They are a waste of time. It's old tech circa Norton Manx's and pukka 1950's English bikes. There are no megaphones on any race cars...formula, GP, World Rallye, NASCAR...Nowhere. 45 years of this shit. We've seen it all. And stepped primaries are for clowns.

Born every minute as they say.

On the other hand maybe we should raise prices to $3,200.00 since every minute there is a new one born....and sell you the other three items.

00-1306 FXLRST 2022

Customer writes: "Thanks for the awesome work the pipe sounds awesome." Kevin

2020 M8 Softail Low Rider S 00-1306R

Customer writes: "I was very surprised by the sound level of the pipe. I have owned a LSR 2-1 00-1306 (no resonator) on a prepped Twin-Cam 110ci, and I must say this new pipe is incredibly quiet even though I run it on a 128cid with 11:1 compression. Dare I say « too quiet ? » ;-)

As I am used to LAF pipes, I was almost disappointed when firing the engine. But after a few miles running the bike I must say the sound level is just great.
Tone is very deep, and it will bark but won’t kill your drums when you open wide.

By the way, my neighbors thank you…

Performance-wise, the pipe seems really excellent, but I guess you need no feedback on this point !

I was aiming with this build 150-155HP. Engine is already shooting 170HP with a partial tune. Midrange torque is unbelievable.
Ill be back with more precise figures as the bike gets fully tuned.

Update: And thanks for the new shield. Fitment is perfect.

128ci, 173Hp@5300, 194Ft.Lb@4300 (Engine figures), 30 tooth Belt Pulley.

Hang on! That ride is a blast !!!

Best Nicolas"

00-1306 M8

Customer writes: "Hi,

Finally got a photo of the bike with the exhaust on. To say I'm happy with how it sounds and looks would be a huge understatement!! I absolutely love how deep it sounds and that noise when I open it up is just so damn good!! It even impressed the guys at my local Harley Davidson dealership so that is saying something.

Thank you for an amazing product! Jamie."

00-1306 2012 Blackline

Customer Writes: " Hey all, just wanted to share a pic with you guys of your LSR on my 2012 HD Blackline FXS project, The Blue Collar Blackline featured at Iron Trader News. I absolutely love this pipe! The look, the sound and the power. It's a head turner for sure. Idling in to a bike night, the sound from a high compression 110 build with big cams turns heads. The haze of tire smoke when leaving shows that it makes power to match the sound.

Love your work, and what you have built! Dave."

Winner

Robert Berry took a win with his Softail and one of our 00-1306 Pro Stock 2" Challenge exhausts. Hard work and prep pays off.

00-1306 B Style Softail

00-1306 Fatboy Lo

Customer writes: "Just Installed on my 2012 Fatboy Lo! Thanks so much for everything. Sounds is amazing and performance is easily noticeable. Such a unique pipe which sets my bike apart from all the other Harley’s with the same old Vance & Hines exhaust. I’ve gotten more compliments on the exhaust than I can count and I just installed it this week! Cory."

00-1306 Aloha

Customer writes: "Aloha! Here are some shots of your pipe. Thanks for a great product!! Mahalo, Guy.

2017 CVO Breakout 124CID: 147.14Hp @5960; 161.23 Torque @ 3760

Customer writes: "My bike is a Pro Street 2017 CVO Breakout. The Dyno chart is after I put 680 Star Racing cams and it is comparing the 640 cams . 680 has more torque down low.

Thanks I love the pipe ...Robert"

00-1174 LSR 2-1 Pro Stock 2" primaries in Dual Coat Black Ceramic.

00-1306: 142.5 Hp 151.17 Torque

00-1039 Big Inch Springer

00-1306 2"

Customer writes: "Hey Lynn, just off the lift - love the look and sound. Will send a good pic when I get 'er out. Another rain event headed this way! Thanks, your web site is the best!

00-1306with three heat shields.

Warfighter Made

PDF Explains:

No money exchanged hands.

M8 Softail

Customer writes: "I finally got your race pipe on my bike and it sounds awesome , i had my mechanic put a zippers tuner in with woods cam and it sounds like a Chevy motor with open headers . Couldn't be happier with the results of this combination , loads of power , no dyno numbers i can just feel the difference , keep up the great work ! Lew".

00-1306 LSR 2-1 M8 2" Pro Stock Challenge.

Softail 00-1306

Customer writes: "Hello.I hope all is well in your part of the world, first up thank you for sorting out bits n bobs to fit the second hand Pro Stock Pipe I purchased of a 2007 softail which arrived well packed and fast.

The pipe fit like a glove, provides access to my clutch cable and shows off my Carlini torque arm nicely. I only got it on the bike an hour ago and took it for a quick blast..... when I got off the bike I was dumbfounded, I knew there would be gains but I wasn’t ready for this! Throttle response improved, hp gained as an estimate 10/15 hp with an exhaust note that’s all business with no back cackling bullshit! All this with no tuning to suit the pipe! The best exhaust system on the planet, not trying to blow wind up your arse just calling it for what it is! This system is the first bolt on horse power everyone should purchase, the V&H big shots I removed were 6 pounds heavier! It’s like winning the horsepower lottery finding your system!

Now I have the exhaust sorted (with 18mm sensor ports bunged off) I would like to fit your AFR meter for obvious reasons, you recommend the single display for carby models. Down the track I will invest in your closed loop fuel injection system for my EVO, so the question is... could you please advise the correct set up for my 1999 FXSTC with this in mind, perhaps the dual display for future improvement? I have dual CHT gauges and my bike runs front 280 and rear 270 which is at odds with the norm, btw screamin eagle 1550 kit was fitted prior to buying the bike...at least that’s the info given and I haven’t put it on a dyno to suss it further as I hate to burn money.

In closing, thank you for an awesome exhaust system which I had no idea would be this good and I can’t get the grin off my face, and thank you in advance for any advice you can give on the AFR meter.

All the best and kind regards, Peter (the bloke in Melbourne Australia with the huge grin on his face compliments of RB Racing LSR Pro Stock Pipe)."

Seeing Double

Customer writes: "Got my prostock on my CVO springer, looks great, sounds better, super bad pipe, thanks for getting it done fast. Got 2 now, the badboy still looking and running great also. Thanks again, Chris."

New 00-1306R Exhausts (Resonator Db Reduction)

These new LSR 2-1 Pro Stock Challenge 00-1306R designs are available for our full product range i.e. Evo Sportsters (all years) including S&S SA cases, with offset cam chest, EVO Big Twins and Twin Cams to include S&S SA B1 / B2 / B3 cylinder heads...And all the new Milwaukee 8 Dressers and Softails Models.

2" LSR 2-1 Pro Stock Challenge 00-1306: Milwaukee 8 Softail

Milwaukee 8

The Milwaukee-8 is a taller, heavier engine with the O2 sensors moved upstream, closer to where they should have been. Earlier LSR 2-1 designs will not fit this motor. We supply a different saddlebag mount system for our under the bag designs like the Pro Stock Spyder and Black Hole. All systems also have a three point laser-cut mount off of the transmission.

00-1306 LSR 2-1 Pro Stock Challenge exhaust with 2" primaries. Prototyped at RB Racing on 2018 Softail FLSB Sport Glide.

There are two versions: One for mid pegs (FXLRS; FXBB; FXLR)...and a second for forward control models (FLSL, FXFB/S , FLDE, FLSB, FLFB, FLHC/S, FXBR/S, FXDR)

00-1306 Challenge 128CID: 180HP; 204 FT/LBS Torque

Customer writes: "Here's a photo of the bike... I'm very happy with the pipes and performance. Recently had the128 kit installed. Regards, Jason".

00-1306 2" Pro Stock Challenge for the new M-8 Softail. Finished in dual coat ceramic black with three heat shields.

00-1408 2" Milwaukee 8 Pro Stock...J.J.'s "Beast"

Currently in the 135 hp range...Now being bumped from a 117" to a 127"....Assembled by Cool Springs Harley Davidson. Tuned with a TTS MasterTune.

LSR 2-1 Pro Stock Part Number 00-1408 in Dual Ceramic Black. 2" primaries with heat shields.

Bad Boy Spokes!!!

Customer writes: "The pic I promised of my new Pro Stock on my Bad Boy. Looks, performs and sounds badass. Compliments on it everywhere I go. Thanks for everything, and just thought I'd include my buddy's cvo springer, he got the Challenge.

2nd Life

Customer writes: "I bought a Pro Stock exhaust for my 2000 Ultra Classic a couple years ago. I sold the bike in February, 2019, and the man who bought it wanted the stock pipes back on it. I took the Pro Stock exhaust off.

I turned around the next week and bought a 2002 Heritage Springer. It had a D and D exhaust on it that I didn't like. I called RB Racing and you said the Pro Stock would fit the engine, but may have to modify the bracket. It went on easy and I was able to mount it using the Ultra Classic bracket that it originally had. No drilling or cutting. Only had to use one mounting bolt on back of exhaust to bracket.

The Pro Stock looks great and sounds better on the Springer. Thank you for all you help. 2002 Springer, 95ci, Mikuni carburetor, Andrews 26a cam. 18 inch LA Chopper Apes. Rick".

LSR 2-1 Pro Stock in Dual Coat Black Ceramic.

Black& Chrome Shields

Customer writes: "Hello everybody,

First of all I would like to thank you for the excellent 2-1 LSR Pro Stock you sent me last year. Here are a couple of pics of my ride with your pipes on. As I ordered the heat shields in both chrome and black ceramic, I can easily change the looks of the bike. I finally settled on the black version for a more aggressive look !

Fit and craftsmanship are excellent. I just had to struggle a bit mounting the 2’ primaries as there is very little space left to work a tool.

What about performance?
My build is a 110ci drop in kit with SE259 cams, ported heads, 58mm TB with 4,9 injectors. I used to run it with a V&H 2-1 Propipe.
As I am a DIY tuning enthusiast, I can make an objective comparison between the two pipes. In short, it’s just another world!

Running my 4,9 g/s injectors with the Propipe, I used to stay around 80% maximum duty cycle at WOT with a 12,5 target AFR.

But with your pipes on, I shot over 95% duty cycle in the same conditions. No need to say I had to upgrade my injectors.

Considering 4,9 injectors should give about 125 rear wheel Hp at 85% duty cycle, I think my bike consistently overshoots 130hp. I haven’t dynoed it yet, I’d rather ride…

When I first ran your pipes, I got this incredible feeling to sit on an unfiltered raw engine. I could get instantly a strong mechanical feedback, like if my previous pipes would choke the engine and soften everything. These pipes really rock as hell.

Tuning was not simple, as I got a very strong reversion at midrange on rear cylinder. In finally managed to get a low rpm smooth running, and man don’t get on it if you're not prepared ! That bike revs like crazy and sounds like as NASCAR ! Sound is just incredible. Way to loud for urban use. I ride it with ear taps, mostly in the mountain, as Monte-Carlo roads begin off my backyard.

Gee, I love this bike, and I love your pipes. Thanks for that !

The only negative point about this combination is a torque dip at 2750 rpm. Bike is very strong at 2000, and a killer 3000rpm up. But it’s a little weak 2500-2750. I tried with your baffle and retuned. Obviously the baffle helps filling the engine around 2500, but in the same time it kills all the magic over 3500, where the engine is supposed to run best. Did not keep it long.

I bought yesterday a 2018 FXLR M8 Low Rider, and intend to drop in a 120ci Fuel Moto Kit (No head job, stock throttle body) and I would like you to build a pipe for this new bike. I believe you would still recommend 2’ primaries, but I don’t know if you already have a C design ou a B design working for that M8 low rider.
Are both design compatible with mid and advanced footrest ?

Feel free to publish any of my comments on your Website.

Best

Nicolas".

191.45 Torque

Customer writes: "Carburated MY 2000 FXSTD pulls like a freight train. 191.45 Torque.

2” C Style 124” Challenge Drag Race 00-1306, Polished Silver Ceramic
CV 51mm
120R
S&S IST/S
SE Roller rockers
Feuling High Load Beehives
Adjustable Pushrods
Head Gasket .030
SE ACR’s
SE Clutch
Standard 5-speed transmission
422 Series Heavy Duty Shocks

Rgds, Christian."

Some people look at our LSR 2-1 Pro Stock systems and declare..."My Tuner says I'll lose torque unless there is a baffle". Not if you are a tuner.

Thailand Executive Chef

Customer writes: "Hi, just thought would send short a note...am very happy with the pipes and performance. Regards Jason".

00-1306 LSR 2-1 Pro Stock Challenge with heat shields in Dual Coat Ceramic Black.

XMas Down Under

Customer writes: " Worth the wait! Sounds amazing. Give fed ex a pat on the back, exhaust came on time even with Christmas and New year’s. Is booked in for a tune/dyno in the new year. Cheers from Australia! Ben".

"C" Style Softail

Customer writes: "Here are the pictures you asked for thank you very much you have been so kind and helpful"

00-1306 "C" Style Challenge

Customer writes: "How's this shot? Pipes are tuned and running great. Alan". Dual Coat Black Ceramic LSR 2-1 Pro Stock Challenge. No baffle. Full coverage heat shields.

98" B Style 00-1306

Customer writes: "Just finished this build. All that remained stock was the frame, trans, and lower end. Still doing heat cycles, so no performance figures yet... If it runs as good as it sounds, we'll be very happy! I used the following parts from S&S on the engine:
98" Kit
83 CC CNC Heads
585 Gear Easy Start Cams
Premium Travel Limited Lifters
Forged Pump/Plate kit
58MM T-Body kit

I love the B Style pipe and all that was needed to accommodate the footboard was spacers. The customer and myself are ecstatic with the look and sound of this pipe! Thanks again for building another masterpiece of a pipe!

Hot Rod Todd's Custom M/C Shop LLC".

91 Fatboy 131"

Customer writes: "I finally got my 91 fatboy all done and running. I have been able to hit the drag strip a few times (I am running in the high 11's for now) and my bike sounds mean and looks pretty damn sweet with your pro stock pipe on it. My 131 big twin can exhaust like no other! It sounds like thunder when she fires up! I laugh when people roll their windows up as I cruise around town. RB Racing, you guys nailed it! Thanks for being available to us average folks! Orin."

00-1050 2" LSR 2-1 "C" Style Pro Stock in Dual Coat Black Ceramic with three heat shields.

Softail Forward Controls

Customer writes: "Beautiful".

Blue Magic

Customer writes: " Love the pipes!"...Darryl.

Customer writes: "I just put the finishing touches on Jeff's 07 FXSTC with an in house 124" motor" 2" LSR 2-1 "B" Style Pro Stock in Silver Ceramic."

1st Place

Customer writes: "1st Place Colorado Motorcycle Expo"...00-1306 LSR 2-1 Pro Stock Challenge. While everyone is looking at the girl grab that money on the floor.

On second thought leave the money on the floor and grab the girl....No, on third thought the guy in the Green T-Shirt might have objections to the first two. What the hell...grab something. Go for the girl.

Bad Ass Softail

Customer writes: "This exhaust is for real. The fit was impeccable. The sound is mean as hell..The workmanship is like no other. Thank you RB Racing , for being so good at what you do, that's hard to find. Steve W."

00-1306 Pro Stock Challenge with full heat shields.

Bad Ass 2004 Fat Boy

Customer writes: "Is it a Fat Boy? Whatever... friends say it is "bad-ass". Well, it has one bad-ass exhaust! Thanks, Jack."
00-1173 LSR 2-1 Pro Stock 1 3/4.

Rocker SE120R...146 HP

Customer writes: "Attached are pictures of my 2008 FXCWC (Rocker) with your pipes on it. The engine is a SE120RX which produced 146 HP. Like you give a shit!! Thanks, Butch". 00-1306 Pro Stock Challenge with 2" primaries.

We only give a shit if it goes like shit. With 146 hp it should burn enough rubber and shake the ground hard enough to wake up the Rocker's creator...Willie G.

121 TP and Ape Hangers

Customer writes: "Hello once again, here is another customer of mine that is enjoying the benefits from your exhaust pipe . Bike is a 1998 softail that has been customized through the years with a 121 TP motor. Customer mostly enjoys the top end the pipe produces and the one of a kind sound. Thanks for posting the pics everyone loves it. Thanks Dave.Wob's Cycle Shop Wall, NJ."

00-1040 B Syle LSR 2-1 with 2" Primaries.Who needs deodorant when you've got ape hangers...a thin coating of road grit is safer then smearing Aluminium zirconium tetrachlorohydrex gly under your arms. Then again, the girls like things that smell nice...Get out the deodorant and the cologne. Nasty looking thing isn't it?

TC Softail

Customer writes: "Love the pipes!! Just got'em dialed-in, rolled on the throttle in 2nd gear and broke the tire loose! (I mean it BROKE LOOSE!! Never did that before!) Made me very happy! Love the sound nice cruising and obnoxious when you rip on it,the way it's supposed to be. They really fit good,no problems about 2hrs. to install. Really want to THANK YOU for everything. Motor was puttin out 104hp. & 98 tq. on the dyno. When I dyno it with the new pipes I'll give you the #'s if you want. Could not be happier!!, Thanks again, Randy W."

00-1306 Pro Stock Challenge with 1 3/4" primary tubes in chrome.

80"

Customer writes: " Got your pipe yesterday and this morning I installed it without any major problems. The fit is very good and the plating is the nicest I've seen ever. The bike sounds like a bike should; throaty and powerful. Compared to my V&H header, the RB unit comes on sooner and pulls till redline with no flat spots. When I dial in the carb it will be just awesome. It's damn close right now. Thanks again for putting the final touch on my 80 inch asphalt eater. Al "

00-1068 Chrome LSR 2-1 Pro Stock.

Busa Beater...Chrome Buffalo

Customer writes: "This is Mike D. in Georgia. This is a picture of my bike, The Chrome Buffalo, which you asked for. I have not dyno’d the bike yet, but I can tell you she is evil...once I got the clutch straightened out. This is a TP 121 #58 that has been re-built to 2007 specifications (new heads, oil pump, cam, etc.) The only problem I have now is putting the horsepower on the ground. Love the pipe, we at the shop decided to not put the chrome heat shields on. The sound is unbelievable, and definitely a head turner when I come through. There is nothing like seeing the jaw wide open of a Hayabusa owner who just got blown away in a 1/8 mile run by a Harley."

Show and Go 2002

Here is a picture of my 02 Fatboy, 1-3/4" C style Pro Stock. This pipe was a great addition to my bike. I have more power down low, and the hesitation I had off idle is completely gone. In short, this pipe ROCKS! I absolutely love it. The fit, finish, sound and performance are second to none. My bike has a Branch O'Keefe 95" kit consisting of #4 heads, JE 10.5-1 pistons and Branch .595 gear drive cams. This is not your average build and it wouldn't run very well with an average exhaust. Thanks guys for GREAT, FAST service and a wonderful product. The only thing I don't like about it is all my buddies are wanting one LOL.." Thanks again, Daren.

LSR 2-1 Pro Stock 00-1070.

Softail 124" Challenge Pipe

00-1306 Challenge pipe on a 124 " S&S motor. Customer loved the pipes then bought a stupid set of billet heads with non standard ports. We only make these pipes for standard ports or S&S Special Application "B2" or "SA" heads. Stay away from the billet crap. We don't custom make these for stupid heads.

Not So Mellow Yellow...165 HP

00-1306 124" Challenge Pipe, Chrome, 2" primaries. Whitewalls with some balls. You can run the "B" style pipe if you space the floorboards.

Customer writes: " Thanks RB Racing for your tremendous exhaust pipes...the LSR 2-1 Pro Stock 124 Challenge pipe. I used all the top brand exhaust systems from Bassani, Rineharts, Thunderheaders to Vance & Hines Pro Pipes. None of these pipes even came close to making the power your LSR 2-1 Pro Stock 124 Challenge pipe made! Keep up the great work!"

"My bike is a 2001 Fat Boy with a 124 cube FI motor with T-Man Heads and Cams built by T-Man Performance. 165.38 Horsepower and 158.16 Ft Lbs of torque. Torque peaked by 4500 rpm and the horsepower was going straight up when we shut it off at 6000 rpm!"

If you do a little thinking you can see it will be back in the torque when you shift. Makes it easier to pull the next gear. Transient acceleration is what wins races. Watch it on Video.

Pro Stock LSR 2-1 FXR

Customer writes: " Well it worked! As promised to Lynn here’s some pics. Hope you both are well!

A long term local customer who ran one of our LSR 2-1s on his previous 80" FXR sold the bike for $20,000.00. It was an offer he wanted to refuse but so high he could not pass up..Then he started a new "FXR" project buying a completely customized FXR with a 120" Patrick motor minus the exhaust for $30,000.00.

Well, long story in short form...We built him a 00-1040 2" LSR 2-1 Pro Stock for his new FXR and it, flat ass, did not fit.

First: Through a process of elimination and double checking fixtures and the exhaust on another bike (Dave's Brown 124" S&S above) it boiled down to the Patrick cylinders and cylinder heads as they sit on a standard S&S Evo crankcase... It was geometrically different from the case upward. We made a second custom pipe at no charge and it was a motherfucker as the front exhaust port is way, way, closer to the frame than stock or even the 124 S&S. Zero reason to make another fixture. One off.

Seçondly: The bike had a 6 speed Baker which is .500" wider than stock and it's center hydraulic banjo fitting eliminated one of our the three LSR exhaust bracket bolts. Stay with the 5 Speed. Three days of work to get a custom exhaust designed with green tape to prevent scratches.

Customer Writes: " Hey guys. Hope you’re well! I LOVE my new pipe thank you so much. Hope you’re having a great weekend Best...Rene".

S&S V111 Cone and FXR's

The S&S machined cone does not taper immediately from the engine case as does the OEM item. We have had to make changes in our "B" style exhausts to clear this non-stock cone. It's always something.

00-1306R

Long Term FXR Specialist Customer calls: "I'm building a new customer bike: Chopper Guys Frame FXR with a Twin Cam SE120R motor, carbureted, left side drive, motor offset for wider tire with aftermarket aluminum Swingarm...Want it quiet (sort of) and want it short"

No sweat...here it is in finishing stages.

00-1306RS: Exhaust offset for frame / swingarm, mount for 6 speed transmission, 2" primaries, 15 degree merge collector, resonator, four full heat shields, single front 18mm O2 port for RSR Air Fuel Ratio Gauge. Headed for Dual Coat Black Ceramic coating. Long Range Motorcycles

00-1306R

We keep a few of these 2" unfinished FXR 00-1306R exhausts on hand and finish them to customer order..Verified on 124 S&S engines with 5 speed transmissions.

Two Bikes

Customer writes: "Just wanted to send a pic of both my RB Racing Pro Pipes on my bikes. Put one on the FXR a couple years ago and liked it so much that when I got my FLHP, I got one for it too.

Can't say enough good about these pipes, they sound and look awesome. Anytime I can I will recommend RB Racing when someone asks about exhaust or to just browse y'alls website for all the info that can be found. Ronnie".

00-1306R Big Inch FXR

Ultimate FXR Pro Stock Pipe headed for a 124" FXR.

00-1306R: Chrome LSR 2-1 Pro Stock with 2" primaries, a 2.5" secondary (2.375" I.D.) and a polished 4" O.D. Stainless Steel resonator (2.5" I.D.) for decibel reduction.

The ultimate FXR exhaust. A wide open race pipe for the street with Db reduction. Also available with 1 3/4" primaries for smaller motors like 80" or even un-modified S&S V111 square motors.

Custom Build...2 Years Later

Customer writes: "Two year finished project capped off with your Pro Stock Pipe. Thanks, makes my toy complete! Michael"

Cruise Control, Closed Loop Delphi ECM, Twin Cam "FXR". XL1200 suspension.

127 Ultima FXR

Customer writes: "To everyone at RB racing.

After I had got the prostock pipe for my FXR installed and went for a ride I immediately compelled to thank you for all the time and hard work you guys obviously put into your products. The quality is superior and the sound that comes outta this 127ci Ultima evo gives me freakin chills. This engine is very finicky when it comes to exhaust and Ive been through quite a few pipes on this build, the Pro Stock has finally made her happy.

I'm more than happy with this exhaust, definitely well worth the price. Thank you Lynn for keeping me notified of the shipment. The neighbors can kiss my ass if they can't appreciate what a wonderful sound it produces. Keep up the fantastic work and have a great day. Chris S. 93 fxlr".

00-1306R FXR

Customer exhaust headed for a big inch FXR. In this case the customer asked for the resonator to be masked before the dual coat black was applied.

00-1306R Resonator exhaust, the most sophisticated "Pure Race" pipe you can run on the street. Dual Coat Black Ceramic with resonator in brushed stainless steel...gold colored after three trips through a 600F oven. The Resonator dampens the sound with and I.D. larger that the secondary post merge collector tube. Zero restriction.

FXR CVO3: 00-1040 LSR 2-1 Pro Stock Silver Ceramic

Customer writes: "I just did a shakedown run after installing your Pro Stock pipe on my FXR. It really seems the bike runs smoother at high speed, and it sounds awesome. I can only describe the sound as “angry”. The look is fantastic, and I appreciate the custom heat shields. I will definitely be recommending RB Racing exhaust to everyone. Thanks again!! Ronnie."

00-1386 FXRP

Customer writes: "I just wanted to take a minute to send a picture and say Thanks ! It was great getting to come into the shop on my trip to California. The quality of the pipe is awesome and the packing was so good. I’ll be in touch and send some better pictures. Ariel."

Two Goblin FXR's

Customer writes: "As requested here are a few pics of the 1985 FXR drag bike w/ 124” S&S engine and B-style RB Racing Pipe and a pic of the 1988 FXR street bike with 103” with RB Racing pipe in the foreground and drag bike in the background. I would be honored to see my bikes on your page. Thanks Joe. "

FXR Instead of Dyna

Coming from Sport bikes the initial thought was to buy a Twin Cam Dyna...Instead the customer bought a 1989 FXR and put in an S&S 124 Inch Motor. Completely diassembled and everything brough to new condition...135 Hp and third place in his first David Mann bike show. 00-1306 LSR 2-1: 2" Pro Stock Challenge pipe with full heat shields.

FXR S&S SA B2 Heads

Start out with a stock FXR...Add a lot of money, redo everthing...And you end up with a big horsepower Harley that's 300 lbs lighter than a Bagger and goes like stink and stops. The stopping part is important. 00-1040 2" B Style Pro Stock setup for S&S SA B2 Heads.

FXR's

Customer writes: "Hi, Attached is a picture of my Custom FXR, using your LSR 00-1306 pipe. Chopper Guys Frame w/3" stretch & 3" longer swing arm. 107" engine, S&S cases with Zippers Billet Heads & Barrells. Wild Things TC-546G cams. FL drivetrain. I'd love to see my bike pictured in your website".

Mark McDaniel
Manager
Backroads Custom Cycles

Customer writes: "Hey, I wanted to get you a pic of my FXR with the 124 Challenge pipe installed. I absolutely Love this pipe, and it performs as great as it looks. Thanks for making such a quality product. I will send a dyno sheet after it goes on a dynojet as I only have run it on a Superflow so far to tune it. Thanks again, Jim." 00-1306 2" LSR 2-1 Pro Stock FXR Challenge.

Customer writes: "I thought I forwarded you a couple pictures but when I spoke to you yesterday you asked me for some. I couldn’t be happier with my RB Racing pipe! It has the look AND the Performance! Mated to my 113" motor it Dyno’ed @ 126HP at the rear wheel with 124 ftlb of torque. Everyone asks about this pipe. It was featured in the DEC. 2010 issue of Iron Works Magazine. I wish I had your Fuel Injection system on this motor though."

00-1306 B Style FXR 2" primaries in Silver Ceramic.

Scaryfast

Customer writes" "Sorry it took so long to get you this pic .I love it . Just the sound I wanted and I don't know but it seems this bike is scaryfast .This is a very special 1 right here .Thanks Dan."

124" Twin Cam in a 1992 FXR

03-1040 2" B Style LSR 2-1 Pro Stock in a 1992 FXR Chassis. Wob's Cycle Shop did the deed. FXR's rule...or as they say at Elvis' Place " FXR or Die".

Customer Writes: " Hey guys just checking in to say a huge thank you from us over here in Australia.

As you would be aware we campaign a bike at DLRA speed week

With the help of Jason (legend )and You guys being generous and to give us an exhaust we used on the bike this year 2023.

Last year was washed out so we had to wait until this year to see the results of our hard work.

After fitting your exhaust and making some changes to carby and intake the bike gained 9 hp and almost 10 ftlb of torque

This year at speed week that resulted in a best run of 169.717 mph with a backup run of 167.8 giving us an average of 168 .8 mph. A provisional Australian record in its class

This would not have been achieved without your generosity and help.

My self (Pete) and Craig the owner and rider of the orange tiger bike would like to express our appreciation for your help.

We a so glad we can share these results with you.

The bike will be back here in Mackay end of May so I can look for some more performance to propel the bike even faster next year hopefully to the mid 170’s mph to maybe ?? grab a world record standing for the bike in its 2 litre push rod class

I have included a link to the you tube video of its run and a small video of some highlights of the event provided by cowboy hat films.

Also, some photos of the orange 2 litre 2003 anniversary wide glide we used to get these results.

As well some photos of the blue grey bike Ridden by Mark that campaigned with us in the 3-litre class that run a PB of 176mph , as you will see it uses one of your exhausts as well.

Once again thank you so much for assistance we are forever thankful.

Regards Pete and Craig with the tiger bike"

POC Jason Stares info@bestwaycustoms.com.au

Customer writes: "Hey. Attached are "before and after" pics; fit was excellent, install went smoothly, and the tail section length was perfect! Thanks for designing such a well engineered product! She'll be climbin' on the dyno in the next couple months, will let you know the results!

Customer writes: "Thank you so much for all you did to help put my 4th and 5th R B Racing headers on mt 2009 CVO Fat Bob and my 2015 CVO Street Glide. Yep I like yellow and the Pro one pipe on the Fat Bob brought the motor to life. But having the need for speed it is now going to go from a 110 to a 117 with direct driven cams. Thanks again. Steve"

Customer writes: "Hey guys I have been waiting to finish the mods on my Dyna before sending you pictures. This is how it looks now. This is a 2015 Dyna Street Bob. Your pipe is bas ass as expected and makes the whole look of the bike. The sound is great and when you get on it it is Loud As Hell! I am tearing down the engine next to make some horse power.
Thanks for a great product and great service! I enjoyed visiting with all of you on the phone.

Customer writes: "To the lady who answers the phone. Here are some pictures of my 2013 Dyna with your amazing exhaust. 107” motor 125 hp / 127 tq. It sounds amazing and turns heads everywhere I go. Thanks for an amazing experience! Mark."

Customer writes: "Hi. Super nice deep sound and super look. I really like it. Teamed up with the RB Air Fuel Gauge its just a great setup for this engine and the Mik48.

Thank you RB Team."

00-1306R LSR 2-1 Pro Stock Challenge (Resonator)...Silver Ceramic, 3 Chrome heat shileds, Brushed Stainless Resonator. Pure race system with zero restriction Db reduction resonator.

Note: The Resonator is just that...Not a baffle. The I.D. of the resonator is larger that the I.D. of the secondary pipe after the collector. Zero restriction just Db reduction.

Customer writes: "Thank you for the pipe. The bike was a 124 S&S with V&H Short Shots. Gained 35.28 hp and 25.12 torque. He was happy. Thanks again. Bryan"

Customer writes: "Sounds like a FAST Harley! Revs quicker. Everyone that knows the bike immediately notices how the engine has better throttle response now. One blip of the throttle is all it takes to spark envy. It has a noticeable volume and powerful sound on acceleration complimented by a smooth deceleration growl. Cruising volume is somehow arguably quieter than the V&H slip-ons that were on the bike previously. The chrome is flawless. Packaging was excellent. It’s amazing how spot-on the fitment of the slip joints are.

The mounting bracket is perfect in form, fit and function. Everything eases into place with a slow methodical hand. Don’t force or rush the installation and you will complete it without frustration. I bought the Dual AFR meter at the same time as the pipe. I cannot imagine an easier way to tune with my TTS MasterTune! I was able to actually improve the tune and power while maintaining 43 mpg. Thanks! Ryan"

LSR 2-1 Pro Stock Challenge exhausts use the same part number, 00-1306, no matter whether they are for Shovelheads, EVO's, Twin Cams , or M-8's.

The rear pipe configuration depends on the specific model and year. For example, all Dresser 00-1306 designs are "C" meaning the rear pipe turns before the "cone".

Late model Mid-Peg Dynas (2006 and later) use the "C" style. 2006 and later Dynas with forward controls, pictured above, can use either the "B" or "C" style designs.

All Sportsters are "B" Style i.e. the rear pipe wraps around the cone. FXR's can be "B" or "C" style.

Customer writes: "2001 Super Glide, 95" big bore, Woods gear drive 590 cams, 45mm Mikuni, Heads by RJ Performance, RB Pro Stock Challenge Pipe.
Was convinced by the motor builder that this was the only pipe to put on this bike when building it. More then impressed by the craftsmanship and performance of this pipe. Huge thanks to RB Racing and Dave Slagter at Cedar Bike Repair, Cedar Iowa, for all the help. We'll show ur pipes off in southern Iowa. Dale".

Customer writes: "Finally got the bike all back together. I added the SE 103" Big Bore Kit with an Andrews 48H cam to my 2008 FXDWG. Added auto compression releases to help save the starter. I put a pro stock on my '84 shovelhead and liked it so much I wanted it for the wide glide. It sounds great, looks great, and the bike rides great with it. Definitely have to wear ear plugs, I love it. Next bike to get one will be the Electric Glide. Thanks for your help and the recommendation to get the heat shields. Before I put them on, I burnt the leg a couple of times. Rick"

00-1329 2" LSR 2-1 "C" Style Pro Stock in Dual Coat Black Ceramic with three heat shields.

Customer writes: "In-house build at Daco. 2007 FXSTC 124" with a great exhaust. Thanks Danny A".

Customer writes: "Here is a pic of my 2005 lowrider with the new pro-stock pipe on it. I am running a jims 120" with 11:1 compression, ported heads and 675 S&S cams. The new pipe really gave me the low to midrange torque I was lacking with the existing 2 into 2 system i was running. The pro-stock looks awsome and sounds great! Dave".

Customer writes: "Hello. I just wanted to say THANKS for a KICK ASS pipe. I am running a 110ci with hi comp, Moto Headz Racing heads, Woods cams and HP Inc 58mm body. After a quick dyno it pulled some great #s 130.1 hp and 139.9 ftlbs. Thanks Mike."

Customer writes: "Hi. Attached are pictures of a 2001 Dyna Glide with RB Racing LSR 2-1 Pro Stock Pipe on a 124" motor , Pipes work awesome! Mike"

Focused power! The smoothest internal construction of any 2 into 1, without any baffles, bumps, shelves, or sharp turns. Hand-made merge collector is expertly heliarced and just as smooth on the inside as it is on the outside. These are real formula one stuff for your 1908 air pump and don't have any baffles in their 2 1/2" diameter tail section. Don't ask us for baffles because we won't put them in there as the i.d. of the tail section is optimum as it is. These are special animals for high compression, high horsepower engines that will rip the the air like a P-51 Mustang under full boost.

We make these in both 1 3/4" as well as 2" primary tubes in both "B" and "C" style variations for most models...Most of them end up on high compression big inch motors (the far side of 100 c.i.) in a 2" B Style, typically on an FXR chassis. If you need a 3/8" offset for your wide tired Kenny Boyce creation or if you have some 3/4"taller cylinder arrangement be sure to tell us before you order. If you want to make more power you simply have to run one of our LSR 2-1s.

Pictured above is Wellesley and family of Lynchburg Harley Davidson. Pipe is a 00-1127 2" Dyna Pipe. Another picture of the bike is lower in the page. Yes, they actually do get raced. No, they just aren't another custom pipe with a racy name.

Customer writes: "Hey, I called the other day and had some questions of making a 04+ exhaust fit a 86-03. After a rear exhaust bracket was made, it fit perfect, I included a photo. I love the exhaust. Thanks for the info!!!! Mike L ".

Customer claims his build was going to get him 165HP...We had sent him a 1 3/4" Turn Out which he chose to not use... So we made him a 2" LSR 2-1 Pro Stock Challenge Resonator exhaust...Certainly capable of having 180+ hp throughput...As for the 165HP we shall see. Silver Ceramic with a chrome collector heat shield...something mentioned about a passenger's leg needing a shield

Last race of the season Temple TX Harley Parts Drags. 1st place. 2" Sportster LSR 2-1 Pro Stock Challenge. Racer.

Customer writes: "RB Racing..Here is the bike I built..runs 10.30s at 126mph..I have dirt tires on it right now...drags racing on dirt..recipe for disaster..Ted"

00-1306 LSR 2-1 Pro Stock Challenge in Dual Coat Black Ceramic

Customer writes: "Hey guys just want to say thank you for the awesome exhaust system on my bike love it you guys are great. Thanks, Dave."

Customer writes: "Thanks for the exhaust. Looks awesome! Rick". 00-1306 for forward controls. Silver Ceramic.

Full custom. Light and Low. Defintely not Cookie Cutter. Love the pedals. Tires stolen from a Buick. Sportsters are Harley's racing heritage.

Customer writes: "This is my RB Racing Pro Stock. I absolutely love the sound. This is my 2000 88 inch sportster, with hog pro wheels. Awesome product and great fitment. Michael"

Low, lean, and clean 2004 88 Inch Sportster. As they say "Belts are for holding your pants up...Chains are for racing."

Customer writes: "I need stickers. Lots of stickers. Or anything else to support the best Exhaust Manufacturer in the entire U.S.A.!!!!!!!!!! I hate that my class is sponsored by Rush exhaust. Their logo is so primitive."

Customer writes: "RB Racing, I am attaching a photo of the RB LSR 2-1 pipe on this 05 Sportster that has much engine work . Pipe turned the bike into a real power house especially mid rage and RPM rev-er! Sure fooled a lot of Harley So-Called Big Bike owners! That 1200 cc smoke-ed um!"

Customer writes: "Thank you for the exhaust your shop has made for me. I had been searching for about a year before I made the decision to go with your pro stock exhaust. I spent the entire winter of 2009 installing a 1250cc kit with ported Buell thunderstorm heads from NRHS along with a set of Screamin Eagle .536 cams. It was the perfect finish to my engine rebuild. In my mind, It sounds exactly like a motorcycle should. The torque is phenomenal and standing behind the motorcycle, you can hear a clean, throaty burn that just screams power. Thanks again for the excellent product. I am recommending you guys to everyone interested in an exhaust. I will try and post my dyno results when I get it tested. John."

00-1224 LSR 2-1 Pro Stock for forward controls. Dyno...we don't need no stinking dyno. Just ride.

Customer writes: " Your pipe freakin ROCKS! I got it delivered to the shop...6 hours after it was supposed to be there(PLEASE, FIRE FEDEX, their 'Ground' service sucks!) Since I helped out a bit in the shop, I got everything done for $60 to include a pair of 'stock' exhaust flanges. My big fat thick SS flanges would not fit, but it's cool.

We got the pipe on, and everything mounted up with loctite and Ultra Black right nice. 'American Heat' looks real good wearing it. Fired it up, and all I could say was,"WOW!" My buds and I call it LAF!, or Loud As Fuck! Yeah, it was inside the shop. Outside as I left, it just sounded real good, like it should have. Out on the road, holy shit, it went like a scared cat when 'American Heat' came on cam and went full song. Front wheel comes up in each gear from a dead stop (and a 3000 rpm launch).

I gotta say, I am always looking at the Silver like I should have got Black, but shoot, it looks freakin SWEET! I LOVE IT! I attached some pics for you guys. Thank you for making this special for me. The slight upsweep really looks good. Maybe in a few years or so I will be ordering my next one depending on when I build my bobber. I am set on an S&S Flathead Power Knuck, but it will have to have a chrome LSR but with the requisite Fishtail at the end to fit the look of a 1947 Bobber just right. Once again, THANK YOU! YOU GUYS ROCK! James".

Customer Writes: "Hello, I attached a couple pics of your pipe on my bike. The craftsmanship is second to none, the bends, welds, and merge collector is a thing of beauty. My power seems to be much smoother and past 3500-4000rpm it really kicks in. You definitely have my endorsement!! I'll get some better pictures for you and if you want to post them on your site I would be honored."

"I got the pipe; I was pleased with the packaging. The fitment was precise. My first run I shaved .07 off my time, now a new personal best. I am very happy and would highly recommend it to anyone wanting to go faster. But I will warn them of just how much faster the revs turn!!!!!!!!!!!!!!!!
Faster revs mean I am moving that much faster as well. I now need to play with my shift points."

It's a 04 1200 R Sportster w/ a 18"x5.5" v rod rear wheel, chain drive, and tokico 6 piston rear caliper.
Thank You" 00-1306 Sportster Challenge pipe in silver ceramic.

Wind in the face, redlining the gears, ripping the air, acceleration pushing your fingers into the grips, front wheel light hitting the bumps...fuck Disneyland! E-Ticket in a cookie cutter world.

Acceleration. Power. Lower moment of inertia. Traction. Try to cheat the wind. Beat the other guy....get the trophy. Early on we chase the girls and can't afford to chase the trophies. Later on we chase the money, dance with the Devil, and, if we're lucky, get the trophies. Hard to do both at the same time. It's never easy. Some people do both and the rest of us take pictures of them. Ralph.

Hot Rod Sportster in a rigid frame. Never enough time for your own projects as you have to make a living. They get done eventually. Hot Rod Todd.

00-1233 Rubber Mounted Sportster Custom. 1 3/4" primary tubes into merge collector. For more details on Harley Exhaust Technology visit our Tech Page.

Customer writes: "I've done installation of my new RB Racing Pro Stock couple hours ago, and ridden several miles around town. I just Love them. On Wednesday I'll do Dyno and jetting, I guess gonna be Wow. !!! Thanks a lot!!!!"

LSR 2-1 Pro Stock Shovelhead 00-1382, 2" C Style....and you thought your Twin Cam was fast.

LSR 2-1 Pro Stock 00-1094 for a Rubber Mounted 1982 FXR. Here being fitted prior to final prep then welding for Dual Coat Black Ceramic. Dual mounting points: (1) Transmission (5 Speed) and (2) The OEM Lord Mount.

The last item in your build is the exhaust...and guess what... There can be conflicts and it is now, you determine, the exhaust's fault, not the other parts fault.

The aftermarket ignition and wires on the left above are not OEM. Customer blamed the exhaust, not his aftermarket ignition wires. WE told him to re-route the wires. He said "Just move it down". It doesn't work that way. We said it takes another design due to the wires that he was unwilling to re-route.

In this case we made a new exhaust in another FX Shovel fixture, with a front pipe way further down (below), that would clear the ignition wires.

Of course, as soon as we made the second pipe for the customer, he canceled the order...saying something about offending him. Go figure.

Customer writes: "I hear you guys like to get pics of bikes with your exhaust. So here ya go.... I'm building a 77 FLH right now and there's already a set sitting here waiting for this bike as well. Thanks Kevin:.

Customer calls..needs a 2" Pro Stock race pipe for large inch Shovel in a hurry. We build it same day...call the next day to confirm finish and payment. Customer says he does not want it. Sold to another customer.

Customer writes: "Thanks guys. Pipes arrived sooner than expected. And they are fantastic! Only have about 20 miles on them but can already tell the difference.

Have never had such a performance improvement on a exhaust change. Thanks again PHD".

Customer writes: "Lynn, here a couple of pics of the 73 finished, exhaust are not as loud as I thought they would be, but looks and sounds great. Carl".

Brankobuilt Shovel from Down Under. Two Inch Pro Stock 00-1381 in chrome. Built big inch to go and stop... Bye bye OEM banana rear brake and crappy front brake. Practical, reliable, sled that will outrun your CVO. Clean bike.

Full-On restorations and new parts from Brankobuilt...all years. Check out their Knucklehead restorations.

Customer writes: "Just a bit of kudos to you. I purchased a pipe from you and just wanted to let you know what I thought. I will ALWAYS be function over from. Put the pipe on and proceeded to destroy a set of lifters. "I do place the blame for this squarely on your product." It was a night and day difference.

Revving so quickly it was incredibly hard to catch it, before it banged the Rev limiter. It really took me a minute to comprehend what was going on. I had burped the limiter before, but in the situation described it actually shut off momentarily. Your pipe has actually changed the math I use. Updated the valve train and went just a bit more aggressive with the cam. I can't wait for this season.

Thank you for a fine product. Jody D. Above the Means Racing

PS. Really nice chrome!"

Customer writes: " Sorry it has been a couple months since getting the pipe, but been getting the bike back together.
1984 FLH, just finished top end. GME 80" Shovelhead cylinder and Wiseco piston kit, 5 speed Baker Transmission, and Andrews A2 cam. Nothing special, definitely not a hot rod requiring a race pipe. But, I wanted a new, good sounding pipe and ran across a RB ad. When I saw that it would fit right up, I knew I had to try it. A little expensive, yes. A pipe you don't really need for an old stock Shovel, yes. I went with the Pro Stock. This was the easiest pipe I have every installed and the sound is unbelievable.

Everyone at the bike shop that hears it ask," What is it?" It does the shovel justice. All that is left is to add the Jim's 3/4" kick start shaft for clearance. Service was great, don't care what anyone has said, everyone was nice and helpful. Got my second Pro Stock in the box ready to put on my 2008 FXDWG as soon as I am finished with the Big Bore 103" kit I am installing now. I can't wait to hear it. Thanks RB Racing for a great product. Rick".

Customer writes: "Here is a pic I thought you would like. Racing in Bowling Green Ky, 9-29-13. Ronnie."

Light, fast bike...Super D Carb and a 2" LSR 2-1 Pro Stock 00-1306 Challenge Pipe. Hooked up.

Customer writes: "Here are a couple of pic's of my 1982 FXRS Shovelhead, which & installed your Pro-Stock pipe on. Love to see it on your site! Btw, pipe is AWESOME! Thanks...Bob". 00-1097 in Black Ceramic.

Customer writes: "Heres an updated pic of my Shovel. You guys have the "old" version on your Shovel page. This is what happens during the long Pennsylvania winters here when I get bored. Just a few beers and a cut off wheel and I'm good to go. The pipe is still looking like new and making great power. Keep up the great work! Dave."

Customer writes: "Here's a pic of your pipe on my Shovel. Its a 93 inch S&S stroker kit, 514 cams, Super E carb. The fit, chrome and workmanship on this pipe are fantastic, Im very impressed. If anyone askes how this pipe sounds you can tell them its all Harley. Its deeper and stronger sounding than ever. Whats really impressive is how hard the bike pulls from 3 grand to about 6000 RPM. The time between gear changes is much quicker than when I ran drag pipes.

I have some sorting out to do with the carb which I expected. The only bitch I have is how long it took to get the pipe!!! The mounting bracket you sent needed to be reworked and spaced out but thats no big deal. Anyway, Im very pleased with the pipe and will be looking for one for my wifes softtail in the future. Thanks, Dave"

It's a miracle we still make these. Lucky it's short term memory that goes first. 00-1094 Chrome Pro Stock 1 3/4" B Style. It is fun to outrun a new Twin Cam bike though.

We hand make all our LSR 2-1 Pro Stock systems but a 2" Shovelhead requires a lot more work. Sort of an odd request, but this one is for a long term customer of ours who has set numerous records with Shovels with our exhausts and is now planning to go to Bonneville with a built 113". The pipe is a 2" LSR 2-1 Pro Stock 00-1381 and is headed off for a Silver Ceramic finish. Customer runs a ported Super"D" with Thunderjets and a ram air system.

You can't get a 2" pipe at the ports as we can on our other systems so we have to "bell" the 1 3/4" into the 2" primaries. Front primary slips and the exhaust is designed for the taller engine. The customer asked for O2 ports so we installed them. We do not sell "raw" systems.

93" and "Bad to the Bone" with Branch O'Keefe heads. Shovelheads are back and they will surpise many a Twin Cam owner. Old School is new school. LSR 2-1 Pro Stock 1 3/4" 00-1097 in chrome.

V-Rod LSR 2-1 Pro Stock exhaust with 2" primary tubes and a sophisticated merge collector. Pure race system. 2005 CVO model pictured.

Comes complete with new mounting system. Billet gaskets required. V-Rod owners have been requesting Pro Stock LSR 2-1 exhaust systems. We're always busy so it has been difficult to tool up for these and to evaluate the designs. After testing this is what we determined the optimum configuration was.

Customer Writes: "

I have finally gotten the exhaust on the bike. Attached, please find a picture that I took last weekend. Everything fit perfectly. Thank you for such a well-made part. Jason ".

LSR 2-1 Pro Stock B Style for a 1" taller 145 Cubic Inch S&S motor with offset for wide swing arm. Left side drive. # 00-1278

00-1039 Envy

Customer writes: "Hello, wanted to share a pic of your Challenge pipe on my chopper...thanks for a great product...Jon

00-1306RSD 2005 Big Dog

Customer writes: "Here is my 05 Big Dog Mastiff with your pro stock challenge on it. Love the performance! Night and day difference and the sound is amazing! Thanks again! Ray."

00-1306RSD with three heat shields. Over 20 years later still turning heads.

00-1306 Big Motor

Customer writes: "Hello,
I received and installed the pipe last week and I am very satisfied with my purchase. I was running some shorty duals that exited right at my ankle and were making my right ear ring every time I rode it plus they robbed my low end a little. It now sounds much better and performs just as good as it sounds. I noticed an increase in torque and it seems to run smoother and better in all rpm ranges which is likely the result of better scavenging. I think the bike looks better now too.

The chrome on the pipe is excellent and the fit is great for a pipe that is not right off the shelf. Because the cylinders are .250 taller than stock the pipe didn't exactly meet the rear mount but was able to use the one that came in the box plus one I had from another bike. I am now considering a 2-1 for my bagger so I'll keep you in mind. Thanks for a superior product. I have included a pic of my bike with the PSC pipe installed."

00-1306 2" Pro Stock Challenge with offset for wide tire. Three chrome heat shields.

00-1306

Customer writes: "Damn I wish I would have bought these years ago.They sound good as a MF!!! the whole bike seems to ride better. I had to relocate mount to tranny. They look better than my others I sent pic of old pipes pls don't laugh. Thanks Lynn for all your help!!"

00-1306 Power Gains

Customer writes: "Hi Rob and RB racing team. I have attached a photo of my new prostock rsd challenge pipe on my bike along with the dyno sheet, which shows both my old pipe and new pipe dyno numbers. The proof is in the pipe. The motor is a bone stock Ultima 127. The pipe gave me 11 more hp and 15 ft lbs!

Sorry the bike photo isn't the best, but the pipe still looks awesome and sounds unreal.

Top notch product and customer service I couldn't be happier. Thank you, Ryan."

00-1050 Pro Stock in Silver Ceramic

Customer writes: "I bought my exhaust about a year ago, and after it arrived I couldn't wait to hear it. Well here we are 18 months since I started the build and I must say it was worth the wait! Looks and sounds awesome! ".

RSD 00-1306 Challenge

Customer writes: "Thanks so much for this exhaust system. This pipe is flawless and sounds awesome. If you would like any more pics I can send them to you.Thanks, Brian".

Danny Arnold...151 Torque

Customer writes: "Another bad ass 124 for Tim, details make a difference… Thanks for everything over the years Danny"

Danny Arnold at DACO Enterprises has been building fast Harleys for a long long time. 00-1306 Pro Stock Challenge on one of his 124" motors. Light bike, great power to weight ratio. Chain drive to handle the power. Old School but modern power.

Hot Rod Todd's Custom M/C Shop...140 HP Sportster

The word is this bike, with it's 2" 00-1306 LSR 2-1 Challenge exhaust, makes 140 hp. That should be enough to get one's attention. As light and fast as it is it's good it has some stopping power. Power to weight ratio is way up there.

Dixie Chicken w/ Baffle

00-1306 LSR 2-1 Pro Stock Challenge in a rigid with full heat shields and a "Pro Stock baffle". Old School...Dixie Chicken. Rubber down, paint up. Customer put this in which required drilling and rplacing the tag.rivets.

Customs..Down Under

Customer writes: "G'day here is a pic of my bike fitted with the rb race pipe you sent me the pipe fitted like a glove and as you can see suites the bike. Thank you for your excellent service one very happy customer I have no problem if you want to use this photo for your website once again thank you. Andrew".

C&S Speed Shop with a 00-1306 LSR 2-1 Pro Stock Challenge. Don't forget, Choppers are way, way, lighter than that 850 lb CVO Sled you just spent all your money on, and ones like this are set up to go and can really kick some butt. Besides they are elemental and appeal to the animal side of our nature...Like Randy Newman sings:

Hate New York City
It's cold and it's damp
And all the people dressed like monkeys
Let's leave Chicago to the Eskimos
That town's a little bit too rugged
For you and me you bad girl

Rollin' down the Imperial Highway
With a big nasty redhead at my side
Santa Ana winds blowin' hot from the north
And we as born to ride

Customer writes: "Hello and I was asked by you to send some pics when I had the LSR 2-1 Silver Ceramic Challenge pipe installed on my 2004 Big Dog Chopper. Well, they run great and here is the picture as promised." Allan.

Customer writes: " RB racing: Here are some pics of RB Racing pipes on a custom bike I just finished. It is a Pro Street Frameworks FXR style frame with a 114" TP motor (yeah one of those billet motors) and a custom open primary. Had fun building this one, will talk to you about a motor for the next one. Love the pipes. Thanks, Doc"

Probably the best time to look at one, when they are parked. Otherwise they are all go. 00-1068 LSR 2-1 Pro Stock with heat shields.

Customer writes: "Exhaust looks, fits, sounds great...built like a tank and fit the bike perfectly. Pic shows it fitted to my 1999 confederate GT...Have a great memorial day. Andrew"

00-1195 Confederate 2" C Style LSR 2-1 Pro Stock in Silver Ceramic with three heat shields.

When you order the TTS MasterTune, a LSR 2-1, and our RSR Air Fuel Ratio gauge, and a TTS Camshaft there is a $100.00 discount. Real world tuning.

TTS M8 Camshaft left above. Mercedes / Illmore pushrod V8 Indy winning 265E camshaft to the right. Pay attention to the lobe design.

Ilmore found that with a pushrod design there was so much monkey motion going on between the camshaft lobe and the actual valve opening that it made more power and torque to gently (preload if you will) open and close the valve. Slamming the valve open introduced disastrous harmonics and accelerated valvetrain wear.

Steve Cole designed his TTS 100/150/175/200 camshafts plotting the acceleration rates contrary to what others did i.e. banging the valve open and shut. Years later Steve finds others are copying his designs even if they do not know why he designed them that way. Camshaft descriptions.

If you actually ride instead of parking and talking about your dyno session you will find the TTS cams will outperform all others in the vital roll-ons in the 1000 to 4000 RPM range.

TTS M8 cams are priced at $275.00. $358.00 for Twin Cams. In stock at RB Racing to pair up with our LSR exhausts and our RSR Air Fuel Ratio meters.

Note: The Resonator is just that...Not a baffle. The I.D. of the resonator is larger that the I.D. of the secondary pipe after the collector. Zero restriction just Db reduction.

143 Cubic Inches for your Dresser. Another way to spend $10,000.00 to $15,000.00 to climb the Horsepower mountain. We are making exhausts for these with integral B3 flanges. The exhaust port dimensions are not oem, not S&S SA B1 nor S&S SA B2. Go figure.

A few people ask us for baffles in Pro Stock Pipes and we tell them "no"...They say they want more backpressure. Well, you never make power with higher backpressure. The real issue is that the atmospheric pressure is 15 psi and it rushes back up the pipe between firing events...that is the pressure you worry about. Pipe length, diameter, cams, fuel and ignition all figure into the events your engine sees when the exhaust valve opens..reversion and scavenging are all affected by these.

All of our LSR 2-1 exhaust systems have welded-in baffles save the LSR 2-1 Pro Stocks which have no baffles. We weld them in all our other LSR 2-1 systems so they never can fly out...and through people's windshields. You normally don't put baffles inside the 2.5" Tail section.

If you specify the Pro Stock pipe to have a baffle at the time of order we will machine the heavier wall end pieces and weld it in...TIG welded at exit of tail section.

The 2.250" louvered core flows about like a 1.875" cross section as opposed to the no-baffle 2.375" I.D. of the un-baffled Pro Stock tail section. The 1.875" flow rate will speed up the gas exit speeds a bit...it is not there to "increase backpressure"...it is there to lower the tone a bit and increase the exit speeds which can lower "jetting" figures on carburetted smaller motors. All LSR 2-1 Pro Stock Designs were meant to be run without a baffle.

The word "Baffle" implies a muffler or sound reduction device. For sound reduction to occur there had to be a larger internal volume and or sound absorption media to dampen the pulsations and convert these into heat and energy loss. These are not very effective sound reducing devices so do not expect them to be quiet.

They might fool a cop on a technical, non-running standpoint but they do not "baffle" the noise.

If you want more noise reduction order a 00-1306R which has a 4" Resonator with zero restriction.

Our testing has shown that the Harley V-Twin is extremely sensitive to back pressure which is why 2-1's that use small or restrictive collectors don't breathe well, and why restrictive baffles shut the motor down. Disc type baffles are good for spark arrestors on dirt bikes but they have no place on a big inch V-Twin. You don't make power by adding restrictions to your exhaust system whether it's a bunch of stainless discs or some damn piece of aluminum billet machined into a Harley butt plug! Ever wonder why they had to put a hole up the center of the discs? Well, one reason was the discs are so damn restrictive you have to have several pounds of them to get enough flow through their waffle shaped passages.

Good mufflers, but they have nothing to do with performance and they sure as hell do not create vacuum as has been claimed. When you get confused by all the bullshit simply ask the following question.." Do they run them in NASCAR or in Formula One?". Nope, they run straight pipe collector systems without any stupid discs or aluminum butt plugs.It's always funny how when the money is on the line, all the little things like discs, billet caps, anti-reversion flaps, reverse megaphones and other such nonsense somehow don't make the field.

If you look at any other "pro" or "king" self-proclaimed winners of the typewriter wars, take a close look ar their collectors and their tail sections On your LSR Pro Stock you get a boost out of the gate when you hit our CNC machined turbo venturi...On the other pipes you either run into a jagged weld or some necked down piece of torky-porky poor engineering.

Headed for the collector on your LSR Pro Stock it high velocity all the way...On the other pipes there are a barage of aluminum butt plugs, stupid discs 90 degrees to your path, and an assortment of flat airfoils and anti-reversion tank traps to slow things down. Get the picture? This isn't rocket science. Just build a clean system with a gentle smooth flowing collector and the rest will take care of itself.

Pictured above is a TC88 big bore race winner from HD of Lynchburg...138hp. Part Number 00-1127 2" B Style. Street bike that races. Pro Pipes like certain combinations. Contact HD of Lynchburg to find the right combination for yourself.

LSR stands for Land Speed Record and that means only one place...The Bonneville Salt Flats, the Great White Dyno. We have the only gas powered street legal bikes over 200 mph and we're damn proud of it. RB Racing doesn't race typewriters, we race motorcycles and when someone says they get a 70% gain from their system, ask them for their 200mph Bonneville Records or any records for that matter. Hell, if we raced typewriters it sure would be a lot easier, not to mention cheaper.

All RB Racing LSR Exhaust Systems feature our "new" (we've been quietly doing it since 1985!) CNC machined Turbo Venturis that actually "scavenge" to help your motor breathe. Machined from billet, these allow full 2" flow and eliminate the phony restrictions that other 1 3/4" to 2 1/4" pipes have at your exhaust port.

Pictured above is an LSR 2-1 Pro Stock C style (J) "FXR" with 2" primary tubes, part number 00-1050. The bike features a Chopper Guys frame with a 121" TP Engineering motor with a 5/8" offset.

Our competitors must think you won't notice that they neck their 1 3/4" to 2 1/4" pipes down to as small as 1 1/2" to mate them to your exhaust ports. RB Racing's Turbo Venturies are expertly heliarced to each primary tube eliminating any internal obstuctions and insuring the maximum flow from each exhaust port. RB Racing won't build phony performance pipes...We sure as hell won't ask you to port your heads, put in bigger valves and a high performance camshaft then stick a bunch of stainless steel discs or machined aluminum butt plugs in the pipe to restrict the flow! And we damn sure won't put some silly "1950ish" reverse megaphone pipe with internal flat plates, baffles and air foils to screw up your performance. Our pipes make anywhere from 6 to 18HP over these stupid designs.

Our CNC machined Turbo Venturis are not compatible with the "bowl-shaped" late model OEM exhaust port gaskets and require early style "flat" gaskets for the LSR Exhaust Systems to both fit and seal properly. The narrow machined flat face of the Turbo Venturi must seat against a flat suface, not the bowl-shaped late model gaskets. Using the LSR Exhausts in combination with the wrong gasket will cause misalignment, inability to tighten the provided close tolerance aircraft nuts, and will force the bowl-shaped gasket into the exhaust port. The correct gaskets to use are: Harley OEM 65324-83 or Drag Specialties DS 174742.

Mandatory for a nominal charge of $ 9.95 are a pair of our LSR CNC machined gaskets which mate perfectly with our Turbo Venturis. These are proven in over 16 years of use on our race and turbo applications...the only gaskets that will stay in a turbo bike for 25,000 miles! These gaskets prevent any gasket "creep" into the exhaust flow and are one more thing that will give you "an edge" on the competition.

We always wondered why people would port their heads, put in bigger valves and then squish the gaskets into their exhaust ports. We bet you never paid attention to what was going inside your exhaust ports for one very simple reason...you can't see what's going on in there once the pipe is tightened! The LSR CNC machined gaskets also insure perfect alignment of the exhaust system. Most fitment and alignment problems are traced to using either the wrong type of gasket or using old gaskets that have taken a "set". We've always used these on our race applications and it's time everyone who's concerned about performance should do the same.

All RB Racing LSR exhaust systems come standard with a machined and heliarced oxygen sensor boss just below your front exhaust port. This port is designed to accept and oxygen sensor (18mm x 1.5mm) which will allow you to use our RSR Air/Fuel Ratio Meter to tune and monitor in real-time your air/fuel ratio. Also, if you really wish to get 55mpg and kick ass, our RSR Fuel Injection's closed-loop heated O-Sensor will plug directly into this port.

We supply both 18mm and 12mm O2 ports depending on the application...In the case of late model 12mm we often supply both.

Every LSR Exhaust is custom made for your particular application. We can handle offsets for wider frames and even build "taller" pipes for those applications that have cylinders that may be 3/4" or more taller. No wire feed bubble gum welds! All LSR Exhausts are fully heliarced for the cleanest possible appearance. It takes five times longer and is much more expensive but it is the best way to do it.

All motors are not the same size, so we offer all our exhausts in both 1 3/4" and 2" sizes as well as step header 2 1/2" LSR Nitro Duals...We are the only manufacturer to do this! Your new 100+ inch motor shouldn't be choked off with too small a pipe! Pictured above is a Confederate with a 120 Cubic Inch Merch motor with our LSR 2-1 Pro Stock 2" part number 00-1195.

People have the idea that closed-loop systems are completely self-tuning and that they are going to sell you some add-on gizmo that will automatically tune your efi bike. This is a crock of shit. The truth is that every engine is different and, in the Harley world, difference is the norm as there are limitless engine build combinations.

In Detroit, Japan, or Germany, they spend thousands of man-hours developing base maps for their automotive applications. On top of these base maps goes the closed-loop feedback mechanism controlled by mathematical equations or algorithms that govern exactly how the closed loop operation will function. These base maps are not written so the vehicle will run perfectly without feedback i.e. maps are not designed for open-loop operation. The strategy for closed-loop operation is different as fuel requirements under different climatic and altitude differences can be as much as 30%. Unless the base map is constructed for the particular application, the O2 feedback mechanism will not work properly.

OEM correction schemes allow only very slight learning corrections or they will "throw" an error code. They do this for a very specific reason i.e. if things are going wrong, which is indicated by the system trying to correct out of bounds problems, then a sensor or something else is wrong. They are not designed to make large swings to correct calibrations that are way out of bounds.

Beyond Stupid

Some add-on boxes for late model O2 sensor equipped oem Harleys eliminate the O2 sensors altogether. Why in the hell would you want to take a self-adjusting, sophisticated system and turn it into a gas guzzling low mileage dumb efi system? Beats the hell out of us and, since we make closed loop efi systems, we do have some experience in this area.

You bike should be left in closed loop, tuned in closed loop and monitored with O2 displays in closed loop. Correction factors defined in the oem code cannot be exceeded. Maps have to be rewritten for the changes to the bike so thje base map is in agreement with the oem algorithms.

Phone Sex and Remote Tuning

In some sort of logical disconnect a few customers call us up wanting us to tune their bike over the phone and then become increasingly indignant when we tell them it just doesn't work that way. Now, we spent the better part of 14 years, starting in 1976 working on carburetors, jetting, needle design, and even designed and marketed a flat slide carb for the Harley market. Thousands of man hours representing about 5 months out of every year were devoted to jetting issues.

It got to be a real issue i.e. it was an interesting experience to define what the correct air fuel ratios should be, experimentally figure out how to measure them, and then deal with tuning die cast critters, often modifying them with extra circuits etc. but, in the end, it was temporal and an endless loop that did not exactly pay the bills.

We did learn how to make things run well, not that anyone appreciated it. It was fun to watch people try to beat you when they couldn't. Knowledge. Hard work.

For the last 20+ years we were working on and manufacturing closed loop fuel injections systems for Harley Davidsons and have set numerous Bonneville, El Mirage and Maxton speed records and won drag racing championships with them. We spent over 3000 man hours writing and perfecting Autocal.V6 prediction and analysis software for our RSR Fuel Injection systems. Why did we spend 3000 man hours? Well, we didn't plan on it, and it's a good way to flirt with insanity, but we saw no other option as digital efi requires hundreds of decisions, all of which are intertwined. No more brass jets. Exponential combinations. Changing points, one at a time is sheer insanity. Progress comes with increased complexity.

Guess what..We made EFI simple but people are not simple..and few had any idea what to do even if you got out the silver platter and handed it to them.

These days all Harleys are closed loop fuel injected with a single throat throtttle body and are speed density Delphi systems, all very complex. It's the same formula we decided on 18 years ago. The only thing we suggest is that you use O2 signals to monitor and tune the system as the sensors are a hundred or so millisecond accurate and must be monitored at the exhaust port where temperatures are high and as far away from the outside oxygen rich air as possible.

We suggest you use software, not hardware, to adjust your system using our RSR Air Fuel Ratio Gauges and keep your bike off of the dyno until the lights in these displays tell you your mixture is correct. Engines operate in a very narrow realm of air fuel ratios. If you want to go to the dyno after this...fine.

Just don't call us breathlessly demanding we tune your bike over the phone.

Superflow CycleDyn...Testing a Running Motorcycle

If you are going to use a chassis dyno it has to be a tool and not a toy. At RB Racing we use the Superflow CycleDyn as it best emulates the real world. We use it for development and not for publishing "dyno charts". Most of our work is with Pectel SQ6M controllers which have extensive internal datalogging and playback capabilities up to 2000Hz sampling rates. With the Superflow we can program specific tests and transient sweeps with our turbocharger systems up 750 hp in inertial mode or 500 hp in Eddy Current controlled accelerations.

For those of you who like Dynojet "Dyno Graphs"..read this article.

Steve Cole (TTS MasterTune) who has spent untold thousands of hours on every dyno imagineable has this to say about CycleDyns:

Steve Cole: "In the development side what I can say is the SuperFlow when setup properly emulates the real world much better. As an example the only way to get a DynoJet to give you HP and TQ is a WOT unloaded run. The SuperFlow allows that plus just about any other combination you like with real torque output. So what does any of it buy you becomes the question. I can tell you that if we tune to a DJ and get the best we can, then repeat on the SuperFlow using real world acceleration rates for the engine being tested the results are very different. Take the final calibrations and run them in both dyno's unloaded and the DJ developed type calibration will show the most HP and TQ in those conditions, on both the SuperFlow in DJ mode and the DJ. Then take the SuperFlow controlled condition calibration and load it in the bike the power will go up when tested in the SuperFlow mode again which can only be done on the SuperFlow.

Now the hooker, take the bike and put one of the finished calibrations in it and give it to the customer and say go ride it and come back after you've ridden it well, to know how it feels/runs. They come back after an hour or so then load the other calibration and ask them to do the same riding over and come back again. Each and everytime we have done this every customer has picked the calibration that was done on the SuperFlow under the controlled acceleration modes! So pick what works for you but there is a difference. Does it take longer, does it end with a measurable difference............. YEP!"

When we have turbo bikes like our Road Glide Turbo it gets a bit interesting to go testing in LA traffic with police, cell phone cameras, and freeway cameras. We still do real world riding with data acquisition as the real world is where you ride.

People want "Dyno Sheets"...see below. We aren't going to test every damn camshaft, compression ratio, piston confguration, cylinder head etc as there is not enough money nor time to do so. However, we do testing for our own race development, R&D, and our personal development platforms.

Dyno Sheets

People call us all the time asking for "Dyno Sheets" and we patiently tell them we do not provide self-serving graphs predicting fantastic horsepower and torque gains. Plenty of customers send us dyno sheets but, as we've been at this a long time, we know the tuning game is too complicated to provide numbers just to sell an exhaust. Tuning is a multi-variable process.

When the EVO motors came out Jerry Branch published his famous manifesto on tuning 80" EVO motors...In short, unless you bumped the compression the horsepower was not forthcoming. Same these days. In 2014 John O'Keefe of Branch O'Keefe ran an extensive series of tests on OEM Twin Cam cylinder heads to see if he could offer a "less expensive" ported head as everyone with a grinder in his garage was suddenly an expert at cylinder head porting. John found out that any attempt to clean up the ports killed the flow and port velocities dropped. He scrapped that idea and kept his well-proven chamber modification, porting and valve replacement system.

Logic seems to be in short supply when it comes to tuning. Tuning is not a pipe changing exercise. The world these days is full of customers who agonize endlessly over what to buy and then dump these parts on some unsuspecting "shop-tuner" expecting miracles. It just isn't going to happen. Coordinated development is expensive and time consuming. If it was NASCAR developer they might spend days searching for a few hp or a different curve for a specific track.

If you are looking for warm cuddily sheets we are clean out of them. We post some that customers provide. We are tuners and you can buy all the trick parts in the world and a guy with a well tuned mild bike with a good power to weight ratio will kick your ass. Real world. Find a good tuner or become one. Look in the mirror.

People get pissed at us when they ask for "numbers". We always tell them we "don't know" because after nearly 33 years of tuning and racing and designing we have seen too much and done too much to give any placebo answer. In fact it always depends on the bike and the tuner. No two bikes are alike. Maybe your bike was built on a Monday and they left a coke bottle in the gas tank (old Detroit wive's tale)...Some bikes are faster than others. Everyone believes their bike is "faster". It depends on the tuner and, these days, the bikes are more complicated. People change from chain to gear drives. They put on different cylinder heads. They switch cams. They add on tuning twiddle boxes. They tune, or the "shop" tunes. They "dyno" the bike...maybe even somebody rides the bike with instrumentation like our RSR Air Fuel Ratio Gauge.

People call us up then hang up when we tell them we don't know what their "gains" will be. We don't publish self-serving charts. We just take all the experience we have and build the best parts we can. People end up happy who buy the parts because they are well made and are designed to perform. We make different tube diameters and offer a wide range of systems for any particular bike so you will maximize your potential. There is no "One Size Fits All" at RB Racing.

People who don't buy the parts because we won't coddle them with assurances go elsewhere where Aunt Em will tuck them in and tell them what they want to hear.

Chrome or Ceramic: All chrome is full automotive grade duplex nickel, triple plate; Ceramic Black finishes are a two layer process with an underlying alumina ceramic covered with $400.00 per gallon semi-gloss black. "Black" pipes are fully polished as if they were to be chromed to remove any surface defects, then are blasted, ceramic coated, baked, tumbled, cleaned, shot with black semi-gloss ceramic paint and then baked a second time to complete the process. We've tried everything you can think of and these are the best finishes.

Both ceramic finishes can be polished or have scuff marks removed by using Mother's Aluminum and Magnesium Polish.