Free Shipping Over $39.99

Orders $39.99 or more ship free within the contiguous U.S.

Free Shipping Policy

No Restock Fees

Doesn't fit? Don't love it?

Return any unused item within 30 days for a full refund.

No-Hassle Returns

  1. Obtain an RA number
  2. Package your product
  3. Send it back to us!
Return Policy

Price Match Guarantee

Found it for less?

RevZilla will match any advertised price on new merchandise available through another authorized U.S. dealer.

Price Match Policy

Elite Service Rating

Our goal is to provide the best possible shopping experience to every enthusiast who visits RevZilla.

See what our customers are saying about us:

Customer Reviews

ZillaCash Rewards

The ZillaCash rewards program is very straightforward - if you have a RevZilla account, you may already be taking advantage of ZillaCash rewards. Review the following guidelines to see how easy it is to maximize your rewards and put your ZillaCash to work for you.

  • Earn and redeem ZillaCash credit automatically with each order - no fine print, no strings attached, and no hoops to jump through to cash in.
  • All you need is a RevZilla account to start earning - Simply log in each time you shop with RevZilla and we’ll take care of the rest, keeping more money in your pocket just for shopping with us.
  • Earn $5 for Each $100 You Spend on eligible products - up to a maximum of $30 ZillaCash per order for orders totaling $600 or more. Any ZillaCash you earn is automatically applied to the next purchase, so you can sit back, enjoy the ride and feel the savings blow through your hair.
Learn More About ZillaCash

Two Brothers S1R Slip-On Exhaust Yamaha R1 / R1M / R1S

Item: P303212

The S1R Exhaust combines more than a decade of racing experience and craftsmanship and represents the next generation of TBR Exhaust. Read More

$594.98
$699.98
Save $105.00 (15%)

This product is vehicle specific. Please to ensure fitment.

Learn More

Product Details

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

Resources

Two Brothers S1R Slip-On Exhaust Yamaha R1 / R1M / R1S

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
  • Eliminates catalytic converter 
  • 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 168.94 172.28 + 3.34
Max Torque ft-lb 77.63 78.01 + 0.38
Weight lb 17.5 4.5 - 13

Made in the USA
Product Style RevZilla Item # MFR. Product # Availability
Product Style Carbon Fiber / Slip-On RevZilla Item #1035541 MFR. Product #005-4260405-S1 AvailabilityIn Stock: Ships within 24 hours

This product is vehicle specific. Please to ensure fitment.

This Product Fits
Yamaha
R1 2015, 2016, 2017, 2018
R1 LE 2016
R1M 2015, 2016, 2017, 2018
R1S 2016, 2017, 2018
This item is also available for 50 different bikes. View All Models
Can-Am
Spyder F3 2015-2017
Spyder F3-S 2015-2017
Spyder F3-T 2016
Spyder RT 2014-2015
Spyder RT-S 2014-2015
Honda
Africa Twin CRF1000L 2016-2018
CB500F 2016-2018
CBR1000RR 2012-2016
CBR1000RR 2017-2018
CBR1000RR ABS 2012-2016
CBR1000RR ABS 2017-2018
CBR1000RR Repsol 2012-2015
CBR1000RR SP 2014-2016
CBR1000RR SP 2017-2018
CBR1000RR SP2 2017
CBR500R 2016-2018
CRF250L 2017
CRF250L Rally 2017
VFR800 Interceptor 2014-2015
VFR800 Interceptor DLX ABS 2014-2015
KTM
RC390 2015-2018
Kawasaki
ER-6n 2009-2011
KLR650 2014-2018
Ninja 650R 2006-2011
Ninja ZX-10R 2011-2015
Ninja ZX-10R 2016-2018
Ninja ZX-6R ZX636 2013-2018
Versys 1000 LT 2015-2018
Versys 650 2008-2014
Versys-X 300 2017-2018
Z900 2017-2018
Suzuki
DR650SE 1998-2015
GSX-R1000 2017-2018
GSX-R1000R 2017-2018
GSX-R600 2011-2018
GSX-R600 2006-2007
GSX-R750 2011-2018
GSX-R750 2006-2007
SV650 2017-2018
SV650 ABS 2017-2018
V-Strom 1000 2014-2018
V-Strom 1000XT 2018
Triumph
Daytona 675 2013-2018
Daytona 675R 2013-2018
Street Triple 2013-2017
Street Triple R 2013-2017
Yamaha
FZ-10 2017
MT-10 2018
R3 2015-2018
R6 2006-2018

Shipping

Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.

Returns

If your order arrives and it is not right, we will fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Product Description
Part Numbers
Fitment
Shipping & Returns

Reviews & Questions

4.9 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
6
1
0
0
0
Bang For The Buck
4.6 / 5
Features
5.0 / 5
Style
5.0 / 5
Ease Of Install
4.1 / 5
Fit & Finish
5.0 / 5
Durability
4.8 / 5
Bang For The Buck
5 / 5
Ease Of Install
4 / 5
Durability
5 / 5
Best sounding and bang for buck exhaust out there for the 15 R1
First off the exhuast looks great on the R1. Second the sound is even better than the looks. It took myself about 45 mins to do the total install, that is taking my time and doing it properly. As far as exhaust work goes it was fairly simple. Performance wise the exhaust added a tad amount of noticeable gains but it smoothed the power curve out tremendously which is very nice. No more throttle surging. I have not installed my fuel controller yet so i do not know the actual gains for the entire system at this time. Durability I won't comment on because I literally installed the system yesterday, pipes and can however felt very nicely manufactured. I gave it a 5/5 for now based on that (to not diminish ratings). All in all I'm very happy and would recommemd this to anyone on a budget of purely wants the shorty look and doesn't care so much about huge power gains. Great product
June 24, 2015
Purchased
over 3 years ago
Ride:
2015 Yamaha YZF-R1
Bang For The Buck
4 / 5
Features
5 / 5
Style
5 / 5
Ease Of Install
5 / 5
Fit & Finish
5 / 5
Installation was a breeze, the fit was perfect no disruptions quality of the two bros can seems very well build,carbon fiber looks of
High quality carbon, first time running a two bros can't say of durability but the sound of the exhaust when you crank the bike it's amazing and turns this bike into a
Beast, a lot of flames very happy with the purchase of this exhaust.
January 26, 2017
Purchased
1 year ago
Bang For The Buck
5 / 5
Ease Of Install
5 / 5
Durability
5 / 5
Amazing Sound and Style
This is a fantastic pipe for the money. Why buy a slip on exhaust and keep the collector pipe? This simple pipe from Two Brothers is awesome. It saved about 12 pounds getting rid of the stock pipe and has an amazing growl. Its perfect for those who want good looks and style while getting rid of the stock canister. Without paying big money for a full exhaust. I recommend this pipe to everyone!
June 16, 2015
Purchased
over 3 years ago
Ride:
2015 Yamaha YZF-R1
Bang For The Buck
5 / 5
Ease Of Install
3 / 5
Durability
5 / 5
Great sound, great look
Best choice for the money when you get mid-pipe and exhaust. The quality of construction is very good, I've had a black series on my Daytona 675 for 4 years and it still looks amazing. The only draw back I had with this exhaust was a slight fitment issue with getting the mid pipe fully on. I added the servo buddy from woodcraft with the exhaust to ensure that I had no had no codes pop up. The sound is great, it's truly hard to beat the sound you can get from a two brothers exhaust.
April 25, 2016
Ride:
2015 Yamaha YZF-R1
Bang For The Buck
5 / 5
Ease Of Install
4 / 5
Durability
5 / 5
I've always liked two brothers
The best exhaust system out there for my 2015 r1. De cat and adds horse power. Also love the deep tone thesee pipes always give
October 27, 2015
Ride:
2014 Yamaha YZF-R6
Bang For The Buck
4 / 5
Ease Of Install
3 / 5
Durability
4 / 5
Sounds great, very loud.
Very loud exhaust, removes the cat , so its a much louder and deeper sound. Blowing flames on deceleration occasionally without tune.
The instructions to install where not very good compared too the 5 other exhausts ive previously installed over the years. The pictures in the install guide are very low quality and dont show much. Things like "remove servo cables" it doesnt explain what those are or where they are or how to remove them, which took me 20 minutes to figure out, im a newbie :P
the tbr slip is contacting the metal right under the pass foot peg, i dont notice any vibrations or unusual sounds so i think thats fine.
No fault codes without tune :D So very please so far. (just please add more and better photos to install guide for newbies like me) :(! sorry for the long review 4/5 stars for the rubbing and so so instructions.
June 5, 2015
Ride:
2011 Suzuki GSX-R600
Bang For The Buck
4 / 5
Ease Of Install
5 / 5
Durability
5 / 5
AMAZNG EXHAUST W/Headturner
I just got done with the install which did't take long at all. Looks and sounds amazing! I will say with any aftermarket exhaust get the smog block offs, this thing is spitting flames like a dragon. idle is louder then the stock pipe on full throttle! consider the silencer so you don't make everyone in a 2 block radius upset!
July 16, 2015
Purchased
over 3 years ago
Ride:
2015 Yamaha YZF-R1
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 37 questions Browse 37 questions and 27 answers
Why did you choose this?
RevZilla Store
Couldn't beat the price Revzilla had. Had to buy it.
Zach D on Sep 8, 2016
the built in link pipe sealed the deal, since the bike is a new design there aren't many options but all my liter street riding buddies swear by Two brother and it's not an arm and a leg of the other guys but still a great sound and performance!
Matthew R F on Jul 12, 2015
Couldn't beat the price Revzilla had. Had to buy it.
Zach D on Sep 8, 2016
I love this exhaust! It has a great deep tone to it and it is really loud with the cat delete. I always get head turns and positive comments when I go places. 2015 YZF-R1
Dana P on Feb 2, 2016
the built in link pipe sealed the deal, since the bike is a new design there aren't many options but all my liter street riding buddies swear by Two brother and it's not an arm and a leg of the other guys but still a great sound and performance!
Matthew R F on Jul 12, 2015
I've always been a fan of Two Brothers sounds. The exhaust, though technically a slip-on, eliminates the cat...allowing a more pure sound. Plus the performance.
Eddie H on Jun 2, 2015
For the price as other exhausts are going for, this is the most bang for your buck. It tucks away nice and neat almost under the bike and it looks great too. Two bros has been making awesome sounding and looking exhausts for a long time and I would recommend them without a doubt.
Vince D on May 16, 2015
I love this exhaust! It has a great deep tone to it and it is really loud with the cat delete. I always get head turns and positive comments when I go places. 2015 YZF-R1
Dana P on Feb 2, 2016
I've always been a fan of Two Brothers sounds. The exhaust, though technically a slip-on, eliminates the cat...allowing a more pure sound. Plus the performance.
Eddie H on Jun 2, 2015
Does it need the cat elimitaro or it comes with it ?
A shopper on Apr 2, 2017
BEST ANSWER: Mine came with a Y-pipe to eliminate the cat. The y-pipe has two sockets for the oxygen sensors. It's a VERY tight fit so good luck
Does this come with the midpipe?
A shopper on Jan 30, 2017
BEST ANSWER: Yes Bro, it includes the midpipe. It sounds great. I would recommend you to add the P1X Power tip because the exhaust it's very loud...
53 Customer Reviews
53 4.5/5
Read All Reviews
36 Questions & 22 Answers
Ask A Question