LSR 2-1 FXR

Bonneville, Dyno, & Track Proven Since 1978:
No Stupid Megaphones , No Aluminum Butt Plugs

The Question Everyone Asks: " What is the best 2-1 Harley FXR Exhaust"


What is the "Best 2-1 Harley FXR 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.

We make FXR 2-1 exhausts in Turn Out and Slash Cut designs
+5" longer Slash Cuts can be ordered with the 00-1416 Quiet Baffle.


   Purchasing the LSR 2-1Exhaust

1. Go to the Partnumbers Page to Locate your bike

2. Look Up Heat Shields for your bike: Heat Shields

3. Mandatory 00-1000 / 00-1001 / 00-1002 Flanges / Clips / Nuts

4. Call 310 515 5720 or Order Online 24/7


124 S&S FXR





We have been doing quite a few 124 S&S exhausts for FXR's so, to see if we could refine things a bit, we brought in a local one and revised our production fixtures for the larger 2" primary tubes... Long way from the mid 1980's.

As always, the brake pedal needs to be raised a bit and we suggest you bevel the leading edge of the aluminum brake pedal (see above).

These bikes started out with 58hp 80" motors and an oil filter under the bike as well as a re-routing of the clutch cable along the way.

It's hard to keep up with all the variations. 

Just don't  put on Dyna motor mounts...That's plain stupid. Everyone thinks they are a vibration engineer...They aren't. Early FXR mounts were a lower durometer...later ones were stiffer and there was more vibration.

This bike left with a new 00-1306 Pro Stock Challenge for drag racing. It was saved from a corrosion death in a Florida salt air prison and redone from the ground up.



Dave installed the 00-1306 exhaust on his 124" S&S and brought the bike by. It has the supplied 124 S&S Carb and Dave asked if we would put it up on our Superflow Dyno and tune or "jet" the carb...Well, we spent 20 years doing carb work from 1978 to 1998...Then we bid carbs goodbye and worked on EFI Turbocharging. 

We told Dave it would be ground zero for us for two reasons: (1) We are not S&S Carb, fixed choke, non variable venturi, gurus and (2) We don't stop the show to work on customer tuning nor do we have S&S Carb parts. 

We'll first see what the Dyno shows with our RSR Air Fuel Ratio gauge and Dave supplies the jets and Thunderjet or whatever. We just went through an off and on month long EFI 128" EFI tuning session for free to straighten out a TTS mis-calibration issue for a long term, out of state, customer

Billet Engine Bullshit



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.


Secondly: 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.

It you are planning on putting a shiny POS 120 Patrick engine in an FXR do not call us. Buy a 124 S&S. It's cheaper and way, way, better. On top of it all the 120" bike was resold again while in our shop. It went back to the original builder who picked up the bike from our shop claiming he bought the motor in Arizona from Patrick Racing  and Nigel Patrick had stopped making shiny motors. We shipped the new / old owner the exhaust later.

00-1011 FXR

00-1011 FXR




Customer writes: "Hi! Just wanted to send a couple photos of your exhaust on my bike! I’ve had nothing but compliments and I have nothing but great things to say about your company any the quality of the exhaust!  Marshall".


TWIN CAM FXR: TC124 / 6 Speed BAKER / Bagger Transmission
Relocated Pegs / Big Bear DYNA Front Mount: 00-1112






Left and right side pegs were relocated by the customer on this FXR moving the locations "out and lower" meaning our "LSR 2-1 FXR exhausts" would not fit, so we had to use our Mid-Peg Pre 2006 Dyna fixture (00-1110/12/12/13) that moves the rear "B" primary further down. In this case there is a Baker 6 into the EVO Dresser transmission. We use a modified Dyna transmission bracket not the FXR nor the 5 Speed Dresser bracket. Does get complicated.


Dyna Pre 2006 Mid and Twin Cam FXR Swaps: Also available in Pro Stock (race no baffle) and Pro Stock 00-1306R (pictured above) with Db reducing resonator.


Welded Non Removable Baffles

All LSR 2-1 designs have a welded-in, non-removable, baffle.  LSR Pro Stock 2-1 designs have no baffle (optional welded-in baffle at time of order).

00-1416 Quiet Baffle is optional on our +5" Slash Cut designs.

There is no possibility of a baffle or end cap coming loose because there are none. Zero maintenance for life. No tone change over time,

For those of you who want to "tune" your exhausts...Not ours as they are already optimized. Consult your baffle advisor for appropriate anxiety medication.

S&S V111  Cone


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.

FXR Silver and Black

Customer writes: "Thanks...T.E.W. Fast Package."

FXR 00-1012

Customer writes: "Love the exhaust. Thank you."


00-1010 B Style FXR

Customer writes: "Good afternoon. Spring finally arrived in Michigan, so here's the pic Lynn requested of the installed pipes. They were put on the 1st week of April, but then Winter came back. Loving the pipes. Thanks again! Bruce".

Military 10% discount for Bruce.

36/77 FXR

Customer writes: "Attached is a before and after picture of my 1984 Early FXRS. Having ridden Harley's all my life (now 77) this is my first FXR and I was already pleased with the torque and power, little did I know how much additional power a set of LSR pipes would make. I now blow by creeping cages like a tornado. And I must say they look great also.

As you can see by the pictures my bike is not a show bike its 36 years old but next year I will ride it from my home in North Florida to Utah through their winding desert roads something I have always wanted to do. Thanks Jim".

00-1180 1 3/4" C Style Turn Out with 3 heat shields

FXRP Japan...00-1385

Customer writes: "Dear Customer Service.

The goods arrived in good condition.
The sound and design are perfect.
Next time I'll use this exhaust. See you soon.
Thank you.

Yosuke"



FXR's Forever

Customer writes: "Hello, wanted to reach out to you guys. Finally got my fxr together with a V100” s&s motor. My first experience with your exhaust system and I’m impressed. Sounds great and I think I picked up some seat of the pants power over my previous thunderheader. Cheers and thanks -Justin".

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. "

FXRP/D LSR 2-1 (Floorboard)


Customer writes: "These pipes fit the rider foot boards PERFECTLY.  I'm 69 years old and have been riding most of my life. Best exhaust on the market, period!!!  Thank you so much.  (FXR's rule!). Dewey".

00-1385 LSR 2-1 Slash Cut with 3 heat shields.

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 out 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.

Uses a machined1.875" I.D. Billet Alumiunm 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 126 S&S and T143 SAB2 / SAb3 Twin Cam Dresser systems as the billet cam cover is not OEM.


No 2-1 Exhaust (Turbo) FXR Insanity

  

Sercondary gas tank and an oil bag transmission on an FXR Orca Turbo.

FXR Twin  5/8" Shaft Spherical Bearing

In the picture above, at the top, are some really questionable Delrin spacers that are sold with tubular inserts that, with the help of some grease/paste, are supposted to act as bearings and pivot in the Delrin. This is by no means a bearing in any sense of the word. It is patently stupid...crude with stiction. Those go in the trash.

At RB Racing we machine up some spacers, black items pictured above, that allow you to use the OEM 9208 Spherical Bearing...that is actually a real bearing...and allows you to retain your one or two-piece 5/8" axle. We install these in the pre 2009 Twin Cam swingarms we modify for 2" adjustment, high horsepower, FXRs.

If you choose to do this be aware you must change your rear wheel, axle, and brake assembly for the 25mm rear axle and later model brake calipers.  Do not attempt to drill or ream your transmission case for the late 3/4" axle. There may be more Delkron FXR cases with 3/4"pivots being made (?)...even though Delkron went away long ago.





OEM shocks or other rubber bushed shocks have stiction when the upper and lower bolts are tightened against the inner steel sleeves. We let the inner bushing float free on the both top and bottom of the shock absorber so there is no stiction as the shock swings though its full movement.



Chain drive with 2" of adjustment. 2008 FL swingarm we modified for FXR...requires other changes like late model 4 piston brake caliper and wheel with 25mm bearings and axle.

We can supply the complete swingarm ready to fit your FXR or earlier EVO Dressers. FXR and Dresser swingarms have different shock locations.


Real World Tuning Package

When you order a complete LSR 2-1 exhaust with the RSR Air Fuel Ratio Gauge there is a $75.00 discount on the total price. You can observe while you ride in the real world to evaluate transitionals and wide open throttle . In actual dyno tuning you really have to hold one "site" i.e. the intersect of load and rpm to get an accurate feedback. That's why you see Superflow engine dynos doing step testing.

Single gauge is for carburetors. Dual Gauge is for sequential EFI (Example TC Delphi in FXR)


The problem is things heat up in these air cooled engines . You can really only do one wide-open throttle pull and one rpm site before the engine heats up too much. Best do real world tuning while you ride and then evaluate, in real time, your jetting with the RSR  milli-second fast RSR Fuel Ratio Gauge. Real time monitoring when you ride is the only way you can evaluate transitionals, acceleration pump, and wide open throttle...all in the real world air and on the road like you do normally.


FXR One and One in Reserve

Customer writes: "Hello, The exhaust and AFR gauge arrived a few weeks ago and b/c of time restrictions I was finally able to get them installed, yesterday.  I just now returned from my first ride - a quick 30 miles - with your new components.  Here are my first impressions;

Fit - Close to perfect - a little tight upon installation and had to wrestle slightly with it - attributed to my lack of experience.  However, much better fit by far compared to the previously installed Supertrapp Supermeg series pipe (not the original stock fitting smaller Megaphone series), which required a homemade mounting bracket. 

Appearance - By far, the FXR looks more badass with the RB LSR 2 into 1on it compared to the Supertrapp Supermeg.

Sound - Louder and throatier than the Supertrapp Supermeg.  I always wear a set of high tech custom-made earplugs, and the pipe sounds great when wearing the plugs. I particularly like the reversion sound (or water it’s called) when climbing to and shifting at 4K rpm.

Tune - The AFR shows that I am running slightly more than rich, as next-to-last red LED is consistently lit during highway cruising range (65mph-85mph). Should I swap down to the next leaner intermediate jet on the Super E?  I’m pretty sure that a .031 jet is in there, now.

Overall, I am highly satisfied and pleased with the pipe and your customer service.  I know I made the correct choice and believe that the RB LSR is the best 2 into 1 pipe choice for any FXR for looks and performance. Thanks for all of the patience and professionalism you demonstrated in answering my email questions through the past couple of years, during which I changed my motor, transmission and foot-peg set-up, thus delaying my purchase by ultimately effecting the decision on style and shape of the custom-made pipe.  I now feel that the FXR-build is finally complete - famous last words! 

As promised attached are several photos of the newly installed RB 2 in 1 pipe on my FXR.  Believe it or not, this bike started out as a 1999 FXR3 (green flame).  I bought it pre-owned in its stock form in 2009 with only 1,600 miles on the clock.  Now, the only stock components that remain are the seat (which I actually had modified into a 2-piece hinge & latch set-up), clutch & brake levers, brake pedal and some fuses and wiring.  I felt so guilty that I recently bought a close-to-stock ’99 FXR3, last year.  Going to keep that one completely stock. Apologies for the busy / distracting background noise in the photos.  Hope it doesn’t distract too much from that badass looking pipe. Thanks again!

Regards. Ned".



FXR4

Customer writes: "Everyone knows it's hard to get a pipe and its mount to hold up on even a stock FXR.
This 00 FXR4 has a built S&S 107 that rattles the pavement, my troubles ended when I got this pipe and I found that midrange PUNCH!
Job well done RB Racing pipe Gods, very well done! Thanks, Larry."

00-1010 in Dual Coat Black Ceramic with Chrome Heat Shields. Lot's of work done to this one.

Specs: Harley Davidson 2000 FXR4:
Plan: High performance motorcycle that blends right in with every cookie cut bagger etc on the east coast, hard to pick from a line up, kind of a 39 Ford coupe moonshiner turned into a motorcycle, have fun, don't get caught.
BST Carbon Fiber wheels, 19X2.5 front, 17X4.5 rear, BST ceramic bearings, From Dirty Customs, Michelin scorcher tires, 120 front, 150 rear, rim and tire sizes picked by Skeeter Todd.
V-Rod lower forks, front fender front and rear brakes.
Wide Glide 49mm fork tubes.
Ohlins cartridge internal components. 
Estimated 15,000 Lumens of forward LED Lighting.
Custom tree.
Speed Dealer Grenade Grips.
Burley pegs.
S&S 107 with backyard porting and tune. (190 CCP)
Mikuni HSR 45
RB Racing pipe.
Carlini Torque arm.
Alloy Art front motor mount.
Cycle Electric 3 phase 50 amp
Dyna 2000i ignition.
Stock 5 speed.
Dustin Dippert FXRcartel SS linkage
Stock gearing cut down for 1 inch belt.
07 Police FLH Swingarm.
CCE swingarm retrofit kit.
Glide Pro bushings. 
Tuned Works Billet rear shocks.
Custom Rear LED Lighting by Black Hills Billet.
NOS FXR Cop bags
HD Diamondback Seat.
Custom Decals by Steve Cheverie



Dumb and Dumber: Changing 3-Point OEM FXR to Dual Mount 47584-09


BBC engine mount... These eliminate the front heim-joint adjustable single point Lord mount to a double fixed-mount system that Harley uses on their late model Dressers. The original three point system pioneered on the FXR, inspired by the Norton Isolastic system, took more time to align but worked well on Baggers and the FXRs.

A couple of aftermarket concerns are marketing this to FXR owners. Beware.

This fixed system was Harley's production-driven solution to go to a simpler two point system and skip the alignment issues on the assembly line on the upper and front adjustable Heim joint 3-Point system. With fixed rubber stops there is no possibility of alignment as there was with the OEM three point system. 

There is a procedure for stock alignment which is not possible with the BBC mount.

Keep in mind that the original FXR was maybe 58 Hp. These days people are stuffing 130 Hp S&S 124" motors in them that, with B2 Heads, can get up to 150+ Hp. Weak swingarms, worn bushings, dead engine mounts, steering bearings that were never checked, no steering damper etc...You have a responsibility to make your FXR handle safely. With turbos we are aware of this.

Put these in the trash.


FXR 120 Ultima

Customer writes: "I'm still breaking in the motor so I haven't been able to really have fun yet but the bike runs and sounds great. The engine is an Ultima 120. Cheers, Steve."

00-1013 in Dual Coat Ceramic Black.

FXR Down Under

Customer writes: " Just saying thanks for the pipes they are awesome". 00-1010  LSR 2-1, B Style, with Heat Shields.


S&S Powered FXR

Customer writes: : "Photo as requested. Love the pipe, fit perfect, looks great performance awesome. Thank you, Cameron."



New FXRP/D Exhausts...(Floorboards)

We borrowed this 1984 FXRT because it was pretty much dead stock. We used it to design new LSR 2-1 "C" Style exhausts. These will be available in the five product ranges we currently offer. FXRT's are sort of rare these days as they weren't around a long time and people tended to buy Dressers instead of this "Sports Tourer". The FXRTs have non-standard floorboards and the earlier style 5 speed transmission with the clutch cable coming around the left side. We had to design all new mounts and fixtures. The stock rear rubber Lord mount is not used as we provide a three point transmission mount. Harley abandoned the Lord mount later on as they all broke.


This is the finished part. It's hard to find a clean FXRT these days. This one is super clean.

00-1385 LSR 2-1 Slash Cut, C Style, 1 3/4" is the most common part.

FXRP...Black Ceramic

Customer writes: "‎I must say your pipes are extremely well built. They fit perfectly on my FXRP. Most pipe Manufacturers do not even have my bike listed. Just got the bike on the road today. Compared to my old Super traps which are tinny in comparison. As for sound, they have a deep throaty note to them. Going on a 2000 mile trip in a month and will have a better feeling about the performance difference. The only thing that I noticed first off was the RPM increased by about 200 at idle over the old pipes. Chuck"

00-1385

FXR #2

If you already have one FXR you might as well get two of them. This is the companion bike to the FXRT pictured above. Painter Joe works on these bikes.

Sturgis FXR

Customer writes: "Having a BLAST with the pipe in Sturgis. Rode 1800 miles out and hundreds here. Pipe is flawless and a lot of people taking pictures of it in Sturgis. Pic is of bike with pipe at Stone house saloon in Belle Fourche SD. Between sturgis and devils tower WY. Love it. Thanks again for the extra special rush of pipe for this trip. Your guys rock and SK does your pipe.  Sincerely John"

Miles Later

Customer writes: "Finally got around to sending you pictures of your LSR pipes on our bikes. My wife's green low rider has the first pipe I bought in 1999 for my evo low rider. That pipe now has over 60,000 miles on it. Stock pistons 88ci SE204 cams 76HP&89TQ.The pipe on my blue Wide Glide3 I bought in 2005 with over 47,000 miles has a 95ci 10.3 pistons with all the goodies 111HP&106TQ  Those numbers alone speak volumes about the quality and performance of your pipes. We're always getting positive comments on the look and sound of the pipes Just bought a new CVO road toad so I'll be calling soon for a pipe for it. Thanks, Larry & Kim".


Bike Inside Car Outside

Customer writes:" If you can post this on your page. 1989 Harley fxrs with a 121 TP Motor".



S&S 113, Fat 5 Transmission, FXR

Prototyping never ends. In this case a customer had a 113" S&S engine with a custom machined Jim's Fat 5 transmission. We told him our standard 00-1013 B Style Slash Cut FXR pipe would never fit and he would have to bring the bike by to have one made "on the bike".

We tucked the from pipes in as far as the clutch cable and frame would allow, leaving room for the brake pedal. 

Shit never ends. If you have a big inch FXR we have the exhaust system for it. Transmission mount. We had to use a late model Dyna transmission mount as the Jim's Fat 5 is not exactly "FXR std" and it's a lot wider...Plus this customer had some sort of rear wheel/transmission stabilizer that made things even more complicated.

After the pipe is tacked together then a custom fixture is made. This 2" exhaust gets a Black Ceramic finish with black heat shields. It replaces a Supertrapp 1 3/4" that had a zillion discs that was wrapped up in header wrap. Bike will be driven from LA to New York. Shit never ends. If you have a big inch FXR we have the exhaust system for it.

LSR 2-1's Down Under

We ship LSR 2-1 exhausts direct to customers in Australia. Middlemen always seem to want to sell things but not actually buy things...and when they do, the price goes sky high and often they order the wrong parts for the customer who has to wait forever... Too many layers. 

We "Build to Order" all systems no matter who you are or where you are and do not try to fill distribution channels full of parts. Offering 700+ parts numbers in four different finishes and in four major product ranges from Full Race to Quiet gives our customers the exhaust system best suited for their intended purpose. We ship FedEx Economy on Mondays and Thursdays.

Customer writes from Australia:" Hello, What a great Xmas present, your pipe turned up just before Xmas. My only regret was not ordering your special tool to remove the bracket under the nose cone, what a cow of a job!! The pipe is a great piece of work, beautifully made and fits perfectly. I put a spot of "goo" on the exhaust flanges so they didn't fall out and it fell together. Finish is great, sound is awesome. I didn't get a chance to ride it much until today and I took the wife for a ride over some mountains nearby, we did about 400kms (240miles).

It has changed the way my bike rides, power is better from scratch but is best in midrange and so smooth, there is no drop in power during gear changes, its constant pulling power all the way through. Thank you for a great pipe from one very happy customer in Australia . PS clearance is also great while spirited handling in the twisties....Tom K." Dyna Street Bob 00-1311.

FXR Test Vehicle

We like FXRs and we instrumented ours with our digital Tachometer, GPS Speedometer, Dual O2 Gauge and Gear Indicator. No it's not a FLHX. It started out as a 1999 FXR CVO2 that we put on a 5 gallon FL tank and got rid of the solid rear wheel and the 21" front wheel. We also converted it to chain drive and put on a Hayabusa steering damper and one of our LSR 2-1 1 3/4" B Style turn out exhausts. We also fuel injected it with one of our closed-loop RSR Injection Systems.

We had Jim's Cycle Painting put on a simple one color scheme as the cops seemed to be attracted to our blue tank, yellow rear fender and purple front fender. Clown bike. Painters are weird. We just left the color up to Jim. He painted Seven time F1 Champion Michael Schumacher's Bobber Harley so he was a pretty decent painter. Jim passed away due to a heart attack. Another painter gone.

Ultimate FXR Turbo

We just can't leave things alone....New Project.

Hong Kong FXR...With Brakes

Customer writes: " Hello there, Finally ready! Nice sound and great power! Best regards, Mikael ". 00-1011 in Silver Ceramic. 1 3/4" B Style FXR, Slash Cut.

Many custom touches front to rear...with Beringer Brakes to do the "whoa!". All the way from Hong Kong.

Big Inch FXR...2" LSR 2-1

Customer writes: " Thought that I would share some pictures of your pipes on my FXR. I just finished the bike, I bought the pipes from you a year or so ago. They turned out pretty good and have been happy with their performance. Thanks for all the help picking them out. Paul ". 00-1046 2" Turn Out C Style with two heat shields.

FXR..Evil Twin

Mike Geokan widened an FXR frame by 1 1/2" , added some Buell parts, put in a high compression 100" motor and had us make a C Style LSR 2-1 with a whopping 1 1/2" of offset to account for engine and transmission offset. Since Mike is an excellent fabricator he made his own transmission to exhaust mount out of aluminum plate. Mike is usually working on his Bonneville Bullett, but since it was completed he needed a new project. 00-1017 LSR 2-1, C Style, Slash Cut, in chrome with heat shields.

Customer writes: "Thank you very much. Your pipes look, sound and feel awesome. It was worth the wait." Many custom touches on this one. Lots of work. Pretty much everything has been changed. Most people agree the FXR frame was the best Harley ever made.

Another C Style Slash Cut in Chrome. Some people prefer the C Style even though they have forward controls.


FXRT

Customer writes: "Here's a picture of the RT. The exhaust performs perfectly, and it sounds great! Installation was no problem and the packaging was beyond compare. The only issue I had was the foot brake hit the shield. Not the pipe before I put the shields on. I adjusted the pedal up, (it's a bit high but works). Other than that, I get a lot of compliments on it. Also, it never pulled a wheelie going into 2nd gear before! Thanks again,-Nick".

00-1011 1 3/4" LSR 2-1 B Style Chrome Slash Cut with hear shields. Pedal clearance with heat shields is tight and requires some adjustments or spacing. FXR's came along 20+ years ago and disappeared then reappeared in CVO special order, short run status. Probably the best handling bike Harley made.

"B" Stories

Here's a couple of photos of my bikes: the flame 1993 Softail has a 120" Ultima motor, RB LSR 2" pipes, and dynos at the rear 126 hp and 130 ft. lbs. of torque. The little guy is a 1991 FXR Low Rider with an 89" stroker motor, 1 3/4" RB LSR, and dynos at 94 hp and 101 ft. lbs. of torque. I've had these pipes for over six years. Both pipes rock ! They make the best power, and have a deep menacing growl ! Don't forget my new Cloisonne RB LSR tag for the little guy......Thanks......Carlos." We sent him a new style tag.

 Military Discount

  

We offer a 10% discount to active or prior service both US Military and the Coast Guard on LSR 2-1 exhaust purchases.

System Approach to Tuning

1. LSR 2-1 Exhaust... Proven performance gains.

2. RSR Air Fuel Ratio Gauge...Observe in the real world. Dynos are great but we don't ride them.




Soot

Whenever you look at an exhaust and see it caked in black soot you know the bike is not running or tuned correctly. Back in the mid 1980's we did a carburetor development program for Keihin Corporation for their 41mm CR Race carbs on both Shovelheads and the new Evolution motors. When we were finished the bikes got 56 mpg cruising and 46 mpg if you ran them harder...and after 500 mile tests the pipes were perfectly clean inside and the exhaust ports were dead clean.

If you take the exhaust system off a modern Closed Loop BMW, as we have, you will find them dead clean or whitish inside. Harleys should be the same.

We always ask what mileage people get from their "tuned" or modified Harleys after "Dyno tuning"....The universal answer is 37 mpg or less. If they don't know, we ask them if they have to gas at 100 miles. Most do.

Once a customer bought an exhaust from us and took his bike to two different dynos in search of the "117 Hp" he was looking for for his 103...He got 110Hp. After pissing and moaning we told the guy to give us our exhaust back and we found it caked in soot. So much for tuners and their tail pipe sniffers that see lean reversions...They just kept adding fuel. You tell the customer to put on our RSR Air Fuel Gauge to monitor the mixtures F/R in the real world...No, they want a "Dyno Tune". We have dynos...we know what they do and can't do.

  

Pictured above is the exhaust port from a 2017 Dyna Low Rider S with about 100 miles on it. No soot. Delphi engineers seem to have done a very good job. Looks like the port you would see on a BMW. Now, when your "Tuner" gets finished with it, it will most likely be full of soot. Logic plays no part in people and their toys. EFI is complex...put in different cams, change air cleaners, port the heads and all this goes out the window. Brave new world.

No soot.


RSR Air Fuel Ratio Gauges...Real World Tuning

The Mother of all gauges! Not a gauge, but a precision tool that will tell you exactly what your engine is doing in real-time. Gives you instantaneous read-outs of air/fuel ratios from 17:1 to 10.5:1 and indicates maximum power ratios. Four color display is easily read in direct sunlight and automatically dims at night. Waterproof, billet aluminum construction. Your significant other will cheat on you but this gauge will never lie! It won't keep you warm at night, but a perfectly running engine will look and sound the same when you wake up next to it the morning after.

Single RSR O2 Gauge: Reads the front cylinder in non-efi models. It is simply the best way to evaluate the tune of your motorcycle and saves expensive and often inaccurate dyno time. Real world tuning while you ride...Observe and then make adjustments. Mounted permanently. Waterproof.

Dual RSR O2 Gauge: Compatible with OEM narrowband sensors. For non-closed loop models (1999-2007) we can supply the LSR 2-1 exhaust with two 18mm O2 sensor ports and two high temperature Bosch O2 sensors: Part Number 06-1026. Real world tuning while you ride...Observe and then make adjustments. Mounted permanently. Waterproof. Use TTS Master Tune Software to adjust the VE tables for the front and rear cylinders.

Mounts....Roll Your Own or Buy One


The gauges have a center back mount 5/16" x 18 x 1/2" Stainless Socket Head Cap Screw and stainless lock washer. You can fab your own bracket for this or use the 06-1025 hard anodized Billet Mount System for either 1.00" or 1.25" handlebars $49.95. Optional is the 06-1024 two piece laser cut 304 Stainless Steel mounting tabs for either near handlebar clamp or up the handlebar mounting: $9.95.




Tune in the Real World: RSR Air Fuel Ratio Gauge

Since we have been doing closed loop fuel injection systems for Harleys for more than 30 years and have been putting O-Sensor Ports in our exhausts for the same amount of time, we have both single and dual O2 ports for our full range of exhausts. Our RSR Air Fuel Ratio Gauge is the best investment you can make for monitoring and optimizing your engine tune.

All LSR 2-1 exhausts come standard with one or two O2 ports (Sequential EFI models)...18mm or 12.5mm. O2 or Lambda sensors are a necessity for either carbureted or non closed loop efi (Weber Marelli and Early Delphi) Harleys. We should know, as we have a lot of experience with them and have been doing Closed Loop EFI systems since 1989. 

The Single and Dual gauges ship with six feet of MIL-W-22759/32 wire. The first 24" is Raychem DR-25 sealed on both ends. If you wish to have a connector at the 24" point there is a $50.00 charge to install either six position (single gauge) or eight position male/female Deutsch DTM connectors with Raychem DR-25 sleeving.

The gauge is housed in a hard anodized round enclosure in a standard 2" format with a 2.250" bezel, center back mount, with a 5/16" x 18 stainless socket head cap screw. The gauge will show fuel ratios from 17:1 to 12.0:1 (or richer). The gauge is visible in daylight and automatically dims for nighttime operation. Only a single L.E.D. illuminates.

Very easy to interpret at a glance. Scale is, left to right, lean to rich: three greens, three yellows, two orange and two red l.e.d.s. You simply cannot "read" spooling digital numbers.

The white arrow indicates the maximum power mixture, the second orange light, which is 13.2:1. Transitory enrichments should not, if the engine is warm (>200F Oil temp), go past the first red light. Readings at the far right side of the scale, the second red light, are simply too rich. Proper closed loop operation will cycle back and forth from green to orange around the center of the display.

It is simply the best way to evaluate the tune of your motorcycle and saves valuable dyno time. Mounted permanently. Waterproof.

Whether your bike is carb or efi this is the best way to tune...By riding and observing, not on a static dyno. Dynos are not exactly real world in terms of loads, airflow, or transitionals, and even if you had a million dollar AC Transient dyno room, you would still have to do real world testing. The gauges are dead accurate and are millisecond fast responding which makes it very simple to interpret or remember, even at a glance, while you are dodging cars watching for cops. We have a Superflow CycleDyn which gives a better real world correlation than other dynamometers but we still evaluate air fuel ratios when riding.

Anyone who tells you optimizing tuning is easy is full of shit. Engineers at Ford say they spend two years just perfecting tip-in or initial throttle openings. Ride, observe,..then change or edit. Real world. 

Pretty soon Harleys will all be watercooled then you really won't be able to tell the difference between Milwaukee and Hammatsu. "The Man" will be sniffing your butt and planting microchips and gps modules up your ass so they can mail you a speeding ticket and keep track of your movements. They already have data recorders on your car so they know what you were doing when the biggie happened. Brave new world. Monitor your engine to get the most out of it before the NSA monitors your tail pipe.

 RSR AFR Gauge Customer Comments


Customer writes: "When the gauge arrived I knew it would be of a very high quality, it has far surpassed my expectations. I was very eager to get this installed and take a look at my tune.  Amazing to see how little adjustments on the carb effect the AFR. As a result of this gauge, I have dropped one size on the low speed jet, raised the clip on notch and confirmed the main jet on my Mik48. Thank you, I really like this gauge. Ed"


"Just wanted to follow up with you. This AFR gauge is a game changer. I think the tune on this bike is just about perfect, or as perfect as a one can get with a carb. I have every needle, main and idle jet available for the Mik48 and think I used everyone of them chasing the tune. Now with everything dialed in, warm idle will flicker between the orange and red light, cruise is at the left orange light and hard acceleration toggles between last orange and first red. Plugs look terrific, bike starts first thing in the morning without any choke, while riding around town the lights are relatively stable, some moving around but not much. Again, I couldn’t be happier with how this gauge works. 

I am building a 124” TC to put into another FXR that I am building. This gauge is already on the build list, can’t imagine not having this gauge on any of my bikes. Thanks, Ed"

Wideband O2  Adaptations 

Systems that typically use Bosch LSU 4.2/4.9 wideband sensors for self-tuning have a built-in problem. First, the "map" has to be correct before any of this self-tuning takes place. Secondly, the real issue is the sensor response time, i.e. the time it takes the sensor to stabilize, and for the ecu to make a corrected output. No matter what they tell your there is a significant delay between the reading and the correction, during which time the engine will be at another rpm/load site . This can be on the order of 980 Ms for the Bosch sensors which is why, in dyno testing, they use step tests for a number of seconds, letting the engine stabilize at specific load/rpm points, before any measurements or changes can be done. Constantly rewriting RAM locations with "corrections" on the fly is never going to be correct.

The OEM narrowband Delphi system actually works twice as fast at 500 Ms and the map, as delivered by Harley, is correct. The Delphi ecm has the ability to adjust about 20% in small increments (block learn multipliers) to factor for air cleaners slowly getting dirty etc. It already is self-tuning except at wide open throttle.

In short, taking off your fast acting, self-calibrating, Delphi system is just plain stupid. Use TTS MasterTune.



Do Not Use OEM Gaskets

LSR 2-1 Exhaust Systems must use our CNC Machined Billet Gaskets (part number 00-1000) and our close tolerance aircraft exhaust nuts (part number 00-1001). The above OEM woven gasket will not work with our machined Turbo Venturis. Four special aircraft exhaust nuts come with the system but you must order four extra ones for $3.00 as they are easily dropped and the OEM 5/16" x 24 hex nuts will not "turn" on our machined Turbo Venturis.

We also offer machined from billet exhaust flanges. If you have a 2004 or later bike it will probably have the thicker exhaust flanges which are not compatible with our Turbo Venturis. Early style OEM Evo chrome die cast flanges and clips or our billet parts are called for. Our Chromed Billet Steel Flanges and clips are $29.95 per set and are stronger than any oem part.

We have had several instances where people encounter "difficulties". Invariably, it is traced to someone not using our billet gaskets. The billet gaskets insure proper fit of the LSR 2-1 system and are designed to work with our Turbo Venturis to increase exhaust flow. 




FXR's

1999 FXR CVO with LSR 2-1, B Style, 1 3/4", Turn Out with rear heat shields (2). This is a bike we used for testing EFI and exhausts at RB Racing. Part Number 00-1010...

117"

Customer writes: "Here is some pictures of my 1990 FXR with a S & S 117ci. motor. the pipe had a thunder header and dynoed at 121 h.p.with a dip in the torque. Then I put a 2" 2 into 1 RB Racing LSR 2-1 pipe on then it dynoed at 130 h.p. with no dip in the torque. This is the best pipe out there. Check out bracket and sleeve on the air fuel ratio gauge, second orange, first red. It's a no brainer. Thanks RB Racing".

The RSR Air Fuel Ratio Gauge has a center back mount with a 5/16 x 18 Stainless Allen Bolt. The wires are sheathed in vinyl coated fiberglass and the gauge can be mounted flush (the wiring folds into a machined groove) or the wires can go directly back. Like the customer said " second orange, first red. It's a no brainer".

Another FXR Customer writes: " Hey, just wanted to say thanks for the great product. After I bolted up the 2 into 1 exhaust I bought for my '89 FXR, there was an immediate, dramatic performance increase from my Supertrapp. I am running an S&S 113" in the stock frame. Looks slick, goes great. Thanks again. Good luck at Bonneville."

Three Fingers

2" LSR 2-1 Part Number 00-1013. Delkron cases Axtell barrels and a bunch of trophies, both show and dyno. Three fingers has something to do with the paint job.

Big Motor FXR

All the way from Great Britain, a 131 Merch in an FXR custom. With forward controls we do a different "C" Style FXR and slip the rear pipe to prevent fracturing just like we do on other rubber mounted engines. Pipe is mounted off of the transmission. As you can see there is nothing stock on the bike. It takes a lot of effort and parts chasing to do this, especially with long supply lines. A long time ago the "Ton" was a magic number. This one will do this in a heartbeat. Dinosaurs have evolved. LSR 2-1 with 2" primaries.


FXR's

Customer writes:"Here's a couple pictures of my bike with a the LSR 2-1. I finished building it about a year ago. I can remember working with you guys in the fabrication of this pipe. That was because, it is fitted on a aftermarket fxr Chopper Guys wide frame, which had a 5/8" motor mount off-set. Thanks for working with me. I am very pleased with the fit, look, sound and performance of the pipe!!! Sorry it took so long to send the pix." 00-1012 Turn Out, with 2" primaries in chrome.

00-1011 B Style FXR 1 3/4" primaries, Slash Cut. Customer had pipes ceramic coated himself. We supplied them polished but unfinished. FXR's are transmission mounted. 

Customer writes: "Hey , I am so happy with the pipes! They are everything I expected and more. The sound is great the looks are great and the performance is excellent! Here are some photos that you are welcome to use on the site...there aren't any Dyna Wide Glides to see!" 00-1114 in Black Ceramic 1 3/4" B Style Dyna Wide Glide, Turn Out Rotated 45 degrees.

 

LSR 2-1's Bonneville,Dyno &Track Proven

If you want to make power on a multi-cylinder engine you have to use a collector system. Whether it's a V-Twin or a V-8 it's the same, and no less an authority than the famed engine builder Smokey Yunick will tell you that. Not using free exhaust energy to help your engine breathe is downright criminal. No matter what the conventional wisdom is, staggered duals on a Harley will not make more power. You simply cannot escape the fact that a properly designed 2-1 will give you more usable torque where you need it, in the 2000 to 4000 rpm range, which means less downshifts and less rpm to get the job done.

A set of short staggered duals at peak rpm can be made to produce good power but they will be dead on their ass until they get there, whereas an engine developed around an LSR 2-1 exhaust can be made to perform from the bottom up with no dips in the torque band! If you don't believe this then why is it always that the top Pro Stock bikes, cars etc. end up running collectors systems? Damn right they work! If you don't think torque between shifts or when you roll the throttle on, then buy those long sewer pipes or some short curly drag pipes you saw on the Discovery Channel.

Check out our new Exhaust Technology Section for information on how all this works.


New Cloisonne Tags

Like in the adage "The relentless search for perfection" we have upgraded the logos we put on our LSR Exhaust Systems. Previous tags were stamped and formed aluminum with silk screened details. The new cloisonne tags are a precision die struck brass, nickel plated, with powdered glass fired in an oven then polished to a jewelry finish. These are direct replacements for our older tags and are available for US $25.00 postpaid via US Global Express (foreign) or Priority Mail (domestic US). They come with black headed rivets and are riveted in place with a light coat of high temperature silicone (Permatex 598B) behind the tag. 

These are direct replacements for our older tags and are available for US $20.00 via US Global Express (foreign) or Priority Mail (domestic US). They come with black headed rivets and are riveted in place with a light coat of high temperature silicone (Permatex 598B) behind the tag. 

Baffling Alien Discs and Aluminum Butt Plugs 

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.

Turbo Venturis

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. We supply special close tolerance aircraft nuts for your exhaust studs because our machined venturis are too wide for a standard hex nut.

LSR CNC Machined Gaskets Mandatory 

Our CNC machined Turbo Venturis are not compatible with the "bowl-shaped" late model OEM exhaust port gaskets or 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 surface, 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.

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.

Nuts 

All LSR 2 into 1 exhausts require special close tolerance aircraft nuts to bolt the LSR Turbo Venturis to the exhaust port. Standard 5/16" x 24 hex nuts will not fit. Each exhaust comes with the required four nuts. It is recommended that you order an extra set (4) of these nuts, part number 00-1001, when you order your exhaust.

STD Cylinder Heads

We make special flanges for STD heads that match the rectangular bolt pattern that STD machines. If you order a RB Racing LSR 2-1 Exhaust you can order these flanges which have been designed to fit our standard turbo venturis. RB Racing Part Number 00-1003. Sold per pair $29.95. When you order a RB Racing LSR 2-1 Exhaust system we either polish and chrome these or bead blast and ceramic coat them.

Goo

RB Racing LSR 2-1 exhaust systems use either one or two slip joints depending on the model. We suggest you put a coating of Permatex 598B ULTRA BLACK in the slip joint. None of our slip joints use any clamps because then they wouldn't be slip joints anymore. In the case of ceramic coated  LSR exhausts the coating is thicker than the chrome and the ceramic finishes have a higher coefficient of friction making the slip fit somewhat more difficult. The use of ULTRA Black will allow easier assembly of the exhaust into the slip joint.

In actual operation the inner pipe gets hotter that the outer pipe and they grow into each other and form a tight seal. The 598B is a non hardening gasket material and will prevent any leakage from condensation that forms in the pipe and, with the usual carbon particles, will actually seal better over time. It also makes the pipes easy to take apart later on. Get a tube before you install your RB Racing exhaust system.

O-Sensor Ports Standard

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. 06-1025 billet handlebar bracket.

In the case of OEM fuel injected models, either Delphi or the earlier Weber Marelli, two O2 ports are installed either 18mm or 12mm.

Ease of Installation: LSR 2-1 Mounting Brackets

As they say. So simple a.....

We offer general LSR 2-1 Mounting Instructions in a PDF Format.

FXR: Transmission mounted using a laser cut 1/4" steel plate and dowels. 00-1181 (FXR Forward Controls) Pictured above. Customer writes " I am very happy with it. It was easy to install and fit very well. Thank you for a great product."

Customer Writes: "Hi, Its been a long time since we have talked. Wayne Keyworth turned me on to your exhaust system. Since then I have enjoyed the performance ever since the installation to the bike and have ridden the bike with pride and out front of the pack with performance of the exhaust and slight cam and carb modification. Real runner it was! Lifetime of remembrance of out-performing the others. Nothing like riding in a pack and cracking the throttle and letting loose leaving others behind no matter how fast or tough they look . Knowing you just have a 80 cu. with mild cam/carb. loaded with all the road pack and passenger.

The reason I'm writing you is, I just purchased my my first BAGGER, I was searching for a performance modification . Pulled up your web site from my previous encounter and seen my old bike made me feel PROUD to have been able to make the web site of such a performing exhaust system manufacturer with just a mild stock bike , That I would challenge any bike/vehicle on the road with confidence and enjoy telling them about it at the next stop for fuel.

My new ride is a 2006 FLTRI Road Glide I don't know what California smog regs are going to be, however, I will be looking for some changes to get me back to the crisp throttle response of my old bike even thought . I have discovered music while you ride. I'm looking for the performance I achieved of the 2-1 system, flow to the rear of bags . Appearance/ performance always wanting something different. 

Thanks again, really enjoyed seeing my old bike. Made me feel proud!"

FXR: There are FXRs and then there are aftermarket FXRs like Kenny Boyce frames and a variety of "Rubber Mounted" pro street and quasi-Softail designs. For all of these we provide a 1/4" steel plate that bolts to your transmission. The bracket is slotted to allow for variations in engine mounting and has a selection of dowels that take into account the different transmissions available. The bracket attaches directly to the back of the LSR 2-1 pipe, which has a slotted bracket heliarced to the pipe. The bracket does not interfere with billet aluminum swingarm pivot mounts like those on Kenny Boyce frames or other aftermarket pivot mounts. Pictured above is an LSR 2-1, 1 3/4", C Style, Turn Out on a 1990 FXRS that has made three trips to Sturgis from California.

DYNA (Evo): Transmission mounted. 1/4" laser cut steel plate dowel mounted. No oem mounts are used. Remove oem mounts.

DYNA (TC88): Transmission mounted. 1/4" laser cut steel plate dowel mounted. No oem mounts are used. Remove oem mounts.

Mounting Torques

For flanges and mounts we recommend 15 foot pounds of torque. On exhaust flanges you do not use any locking compound as our nuts are self-clinching. On bolts for frame and engine-mounted brackets we recommend that the threads be clean and that a low grade (Blue) thread locking compound be used with 15 foot pounds of torque. Bolts and nuts on our slotted brackets do not require a locking compound but can also be tightened to 15 foot pounds.

In lieu of torque wrenches do not over tighten exhaust flanges to the point where they bend. In the case of bolts going into transmissions and into frames also do not attempt to see how strong you are as aluminum threads and bolts are weaker than you and your wrench are. Simply tighten things till the bolt stops and give another partial turn to firmly snug it. The last bit of tightening actually stretches things a bit and the tension holds things tight. Tightening should always be done in a sequence. Never finally tighten one part then go to the next...Always loosely tighten things in sequence and then finally tighten things in sequence.

The exhaust should never be installed with any of its elements in tension. It has to rest in place without strain and be tightened without strain.

We employ split lock washers on most fasteners to prevent counter-rotation. This works surprisingly well if the bolt is properly torqued or tightened.

In any case, you have a responsibility to tighten things or at least check periodically as part of your normal maintenance. Harleys do shake and try to kill anything attached to, or even near them. If things get loose the additional shaking moment can break bolts and destroy threads.

General LSR 2-1 Installation Sequence

1. Remove the OEM exhaust and exhaust bracketry. If the bike has floorboards remove the right floorboard.

2. Pry the OEM exhaust gaskets out of the exhaust ports. We use billet gaskets instead.

3. Install the frame or transmission bracket provided. Use Blue Loctite on the mounting bolt threads into the transmission. Lockwashers under the bolt heads on the transmission mount. If through-bolt like on early rigid Sportsters or Shovels use lockwashers under the hex nuts.

4. Front and Rear primary tubes: Install billet flanges and clips. Install front pipe loosely with billet gasket and nuts provided. Loosely affix the front heat shield to the pipe as you might not be able to install the shield later with the rear pipe in place. We use 1/4 drive ratchet plus extensions and 3/8" socket and a 3/8" wobble for the exhaust stud nuts.

5. If the rear pipe has a slip joint (rubber mounted C Style) slip the rear pipe into the tail section. You may use Permatex ULTRA BLACK.

6. Begin slip of tail section/rear pipe into the front exhaust slip joint (You may use Permatex ULTRA BLACK) and work the rear exhaust and billet gasket into the exhaust port. Loosely affix exhaust stud nuts provided. We use 1/4 drive ratchet plus extensions and 3/8" socket.

7. Slide 5/16" x 18 bolt(s) into slotted bracket on back of exhaust and thread these through the mounting braket. Loosely affix with lock washer(s) and hex nuts provided. Some exhausts may require a spacer (provided) between the exhast slotted bracket and frame/transmission bracket.

8. Gently tighted up all fasteners and nuts. Nothing can be in tension. You may use a rubber mallet to seat the slip joint(s).

9. Install remaining heat shields and tighten front heat shield (5/16" Nut driver). Completely wipe the pipe and shields down with a clean cloth to prevent grease and oil stains from being baked on.

10. Run bike briefly in place. Let it cool down and retighten fasteners. Reinstall the right floorboard with hardware provided.

11. If ceramic finishes it is wise to go through several heat cycles. On modern efi closed loop systems they go into closed loop within minutes. Let bike idle for a few minutes then shut it down to let it cool. Several sessions of this will cure the resins as they are only oven-fired to 400F. Exhaust temperatures are >1000F.

12. Double check all fasteners and ride the bike. Check your work afterwards. You bought a Harley so you are already showing signs of dementia.


Customers

Customer writes: "First, I have had your LSR 2-1 C w/Turnout on my 98 FLSTS for about 4 years and 32,000 miles. It looks great, sounds great, and of course, performs great.

Second, the mechanic that works on my bike also drag races a Shovelhead powered FL. He only ran Thunderheader until he rode my bike and did some research. Steve had you guys make him a 2-1 and set new records in his class.

Third, my brother-n-law has a '05 EFI Road King. He was just dying to put some Rinehart true duals on it. I talked him into waiting until he looked at and listened to a lot of RKs before buying. During the year he did this I kept asking what he wanted out of the new exhaust. Finally, he admitted sound and performance. He kept saying I love the sound of your bike and it is fast as hell. So, I suggested the LSR 2-1 C Slash Cut longer pipe. We installed your exhaust, a PCIII usb, and a K&N filter with stock a/c cover and changed the backing plate. His road king has torque and runs like a scalded dog. We both can out run 95" kits installed at the HD dealers.

I provided the background to say this. My B'law took his RK to the HD dealer for the 15k maintenance service. The mechanics went nuts over the exhaust and what it does for the performance. They asked all kinds of questions. They had never heard of your firm or the exhausts. Now comes the kicker and it makes me a little sad (because I have enjoyed having an exhaust that out performs the crap the HD dealers sell). The mechanics conclusion. They are going to take off that HD exhaust crap (their words) and get RB Racing exhausts. Now the word will spread around Memphis and RB Racing exhausts will be everywhere.

It was good while it lasted - having the performance edge over others.

Your exhaust system has been great on my bike for 4 years and 32k miles. Thanks for a great product. I can't imagine having any other brand of exhaust!

PS. Sure wish you would make a LSR 2-1 for Victory Jackpot or 8 ball. The only reason I haven't purchased one in the last two years is because you said you would NOT make a Victory exhaust.

Later…Cliff"

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 imaginable 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 every time 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 configuration, 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.

If you are looking for warm cuddly sheets we are clean out of them. 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.

Crystal Balls and Astrology

You win some, you lose some. Mostly we win. Like we always say it always depends on the tuner. This is not a parts changing business and we all know it's easiest to just change pipes and see what happens, but that's not science. The LSR 2-1 pipes, themselves, do not represent a "limit" as long as you choose the right pipe for your application. The rest of the equation is getting the parts and tuning to work together.

Just put the damn thing on the road, open her up, and see what she'll do. Let the metal scream.

Torque and Ruby Slippers

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 wives'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. 

Newer Dual Coat Black  Ceramic Finishes

We have a lot more people looking for durable ceramic finishes and we think we have the best finishes on the market. In the late 70's and early 80's we tried all sorts of coatings and paints and even used porcelain on some of our products in the late 1980's. The newer ceramic finishes are tougher and we use both Polished Silver, and Semi-Gloss Black, to complement our usual chrome offerings. The newest "Turbo" Black  finishes are a dual coat process that gives additional protection against scratches and nicks, providing two barriers against corrosion.

In more than 3 decades we have tried all sorts of black finishes: Kal Gard, VHT, Techline, and others. We also in the mid 1980's we even tried porcelain for awhile. It chipped and the heat distorted the parts. Most finishes will not survive over a long period unless they have a base coat to cushion rock strikes and scratches. The surface has to be perfectly prepared and most applications can fail if run too soon at elevated temperatures as they are typically baked at 450 to 500 deg F whereas the cure takes place at around 750 deg F. Lower temperatures will not cure the resins and they will fail once the bike is run. To get around this dilemma we have found the best solution is a 2500 Deg F Silver Ceramic cushion base coat and a secondary Black Semi-Gloss finish on top of this.

Dual Coat Black Ceramic finishes are therefore expensive as they involve a triple process. First the parts are polished to remove any tooling marks.Then the parts are zirconia media blasted to prepare the surface. Then parts are cleaned. The parts are base coated with a 2500 Deg F Silver ceramic and baked. The next day they are sprayed with Black Ceramic and baked for a third time. Three trips to the oven at 600 Deg F.

  

On our Dual Coat Black Ceramic LSR 2-1 Exhaust Systems the heat shields and heat shield clamps are ceramic coated with 2000 Degree F satin black ceramic finishes. These finishes resist carb cleaners and other chemicals. Our Silver Ceramic LSR 2-1s use silver ceramic coated heat shield clamps.

800 Horsepower LSR 2-1 Slash Cut

We're not really sure what a 2-1 has to do with Top Fuel Nitro motors but when Carl Pelletier asked us to make a collector for his top fuel 175c.i. PRP motor we whipped up a 4" diameter collector and sent him the tooling. Take a Tour of what it takes to run a top fuel bike. Doug Vancil's hard running Top Fuel Harley sponsored by Vance and Hines has a 2-1 that looks like one of their Pro Pipes so when Carl asked us to build one we made sure the collector area wouldn't restrict each of the 400hp explosions that were coming from each cylinder. Carl qualified 8th out of 32 bikes at the final Las Vegas meet and ran in the sixes at over 200 mph so the 2-1 probably didn't hurt anything. His best speed is 214mph with the 2-1 so it didn't seen to hurt anything. Top Fuel is pure insanity and is addictive as Heroin for those involved. Like they say " Gasoline is for washing parts...Nitro is for Racing!".

What does this have to do with your rubber-mounted V-Twin?...Not a damn thing! We are in the game however and we do our part.

S&S Four Bolt SA B1 and  SA B2 Heads 

We have been asked by customers to provide LSR 2-1 systems for S&S SA B1 and B2 four bolt heads as well as for the 126" and 145" S&S Tribute engines.  Pictured above are our laser cut flanges and cnc machined venturis that we heliarc to the 2" primary tube for the S&S Racing heads. We make exhausts for both the S&S SA B1 and the S&S SA B2 four bolt cylinder heads with raised ports.

The 145" Tribute engines are 1" taller than stock and have special fixtures.


RISK

These days people have all sorts of expectations. They want to be loved. They want to be admired. They don't want their chrome to turn colors. They want "numbers". They want assurances. They want guarantees, warranties, trial periods, and return policies. They don't want the part, they just want everything that goes with their household baggage. It's all part of keeping everything nice and tidy and "best". Fear of rejection. Fear of making any decision.

We just come in and make the best parts we can and that's all there is to it. The rest of the equation is too complicated. There are plenty of people who will assure you till hell freezes over. We don't have time for this.

For those of you who do not understand that 1450 Deg F of exhaust flame front will discolor chrome don't order the parts, or just leave the bike on the trailer..or order the heat shields to cover up the underlying discoloration. Ceramic or chome the pipes get really hot and heat shields provide an air gap to protect and hide things.... Melted tennis shoes, burned pants. Air is the perfect insulator.

It isn't the old days anymore. People with $35,000.00 toys roll up in the screaming fetal position. Joy used to be a basket case that you could get running. Brave new world.

Angst

The agony of decision making can drive a poor consumer insane..."What is the best?"...".."How does it compare?"..."What will I get, what will I gain?"..."When can I get it?"..."Should I get a 2" or a 1 3/4" pipe".."Will the chrome blue?"..."Can I talk to someone who has one?"..."How long have you been in business"...""I've never heard of you"... "How black is the black?"..."Why haven't I seen these before?"..."My bike is at the builder and he has to have the pipe by Friday or I lose my slot!"..."Is the silver as shiny as chrome?"..."I have a wazoo998 cam and billet rocker boxes and a 280 rear tire...will your pipe work?"

Right brain, left brain. Fear of rejection. Fear of being different. Social standing. It's all too much for most people to deal with.

Look at the pictures, take the Red Pill, and start your journey. It's that simple.

Remove the Angst

If you wish avoid any decision and stay right where you are, just take the Blue Pill. If the journey for truth and power excites your spirit, take the Red Pill.

No Limp Dick Designs

Ever since Jesse James did his original Hell Bent pipes people have either copied them or tried to make whatever they were doing swoopy. If you are a slave to fashion then these might just suit your fancy. At RB Racing we build logical designs that work and leave the limp dick fashion trend to those who love to park and talk.