Two Brothers S1R Slip-On Exhaust Kawasaki KLR650 2014-2017
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  • Two Brothers S1R Slip-On Exhaust Kawasaki KLR650 2014-2017 - Aluminum
  • Two Brothers S1R Slip-On Exhaust Kawasaki KLR650 2014-2017 - Aluminum

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MSRP
$499.98 - $599.98
Savings (15%):
$75.00
Price
$424.98

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Two Brothers S1R Slip-On Exhaust Kawasaki KLR650 2014-2017 Videos

This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

Two Brothers S1R Slip-On Exhaust Kawasaki KLR650

The Two Brothers S1R Slip-On Exhaust represents a step into the future for TBR. The S1R exhaust features a carbon fiber sleeve highlighted by a natural aluminum outlet and stamped, spring-mounted inlet for the ultimate durability. Like most TBR mufflers, the end cap of the S1R exhaust is constructed of magnesium and features a non-stick teflon coating. However, that is where the similarities end.

The aggressive design of the end cap is reminiscent of the modern jet engine making this exhaust move at mach 1 speeds while standing still. The carbon fiber sleeve of the S1R exhaust system is made of a 33 million modulus rated carbon fiber that is impregnated with high temperature resin, under very tight tolerances. Thirty-three million modulus rated carbon fiber can be considered the Goldilocks of carbon fiber , it has strong structural properties without being overly stiff and brittle, making it just right.

The sound produced by the S1R is deep and throaty thanks to its spiral-wound perforated core technology. The rubber-lined, natural finished aluminum muffler clamps feature an aggressive angular design and cutouts to reduce weight. The mid-pipe is constructed from .035” thick 304 stainless steel. After a few heat cycles the 304 steel turns a golden amber color, the hallmark of quality stainless. Of course an exhaust can't be all show and no go, that is why the S1R exhaust is track-tested and dyno-tuned to offer the best performance package.

Features:

  • Fully-serviceable in the event of damage, routine maintenance or the occasional repack
  • Aerospace high-temp carbon fiber
  • Stamped spring-fit inlet
  • Optional P1 and PX1 sound inserts available (sold separately)
  • Optional anodized bolts kits available (sold separately)
  • Made in USA
Unit Stock Exhaust Two Brothers Max Gain
Max Power HP 37.27 40.57 + 3.3
Max Torque lb-ft 33.13 36.43 + 3.3
Weight lb 12 5.5 - 6.5
Max Torque Nm 111 at 11000 rpm 111.5 at 11016 rpm + 1.1 at 8170 rpm
Noise Level db 82 @ 2000 rpm 95 at 2000 rpm + 13
Weight kg 2.4 1 - 1.4
4.6 / 5
Bang For The Buck
5 / 5
Ease Of Install
5 / 5
Durability
4 / 5
This Product Fits:
Kawasaki
KLR650 2014, 2015, 2016, 2017
Product Style RevZilla Item # Manufacturer Product # Availability
Aluminum / Slip-On 985364 005-4010406-S1 In Stock: Ships within 24 hours
Carbon Fiber / Slip-On 985363 005-4010405-S1 In Stock: Ships within 24 hours

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Write a Product Review for a chance to win our monthly $100 giveaways.
2.5 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
0
1
0
0
1
Bang For The Buck
2.5 / 5
Features
2.0 / 5
Style
3.0 / 5
Ease Of Install
4.0 / 5
Fit & Finish
1.0 / 5
Durability
2.5 / 5
Bang For The Buck
4 / 5
Ease Of Install
5 / 5
Durability
4 / 5
Easy to install, Loud!!
Installed this muffler on my 2015 KLR 650, with a UNI air filter and Eagle Mike's KLX jet kit. Runs great, but this is a loud pipe. Signifigantly lighter than the stock muffler.
July 20, 2015
Bang For The Buck
1 / 5
Features
2 / 5
Style
3 / 5
Ease Of Install
3 / 5
Fit & Finish
1 / 5
Durability
1 / 5
Shitty exhaust
I never write reviews but for this exhaust, I really have to. Its so expensive and value is not that good. I like the sound and its good but right after I installed there were leaks between exhaust and pipe. It was a clear design fault no matter I tried the leaks didn't go away and when I called customer care they didn't help much except sending my black epoxy which didn't help at all. So I sent almost $500 on this exhaust but I get no value out of it. It might be good for other bikes and I can't speak for those bike but for KLR 650 , really bad fit and repacking is pain in the ass. Now after 8 months of pain I have to buy FMF or other exhaust. :(
May 25, 2017
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loud pipe for the klr 650 -- I love mine !
david m on Dec 14, 2016
loud pipe for the klr 650 -- I love mine !
david m on Dec 14, 2016