Two Brothers S1R Slip-On Exhaust Triumph Street Triple / R 2013-2017
Zoom
  • Two Brothers S1R Slip-On Exhaust Triumph Street Triple / R 2013-2017 - Carbon Fiber
  • Two Brothers S1R Slip-On Exhaust Triumph Street Triple / R 2013-2017 - Carbon Fiber
  • Two Brothers S1R Slip-On Exhaust Triumph Street Triple / R 2013-2017 - Carbon Fiber

Please select a to check availability, or to add this item to your Shopping Cart or Wish List.

Material:

Exhaust Type:

MSRP
$599.99
Savings (15%):
$90.00
Price
$509.99

Select qty:

Please select a to view availability.
Add to Wish List

Related Videos (2)

Two Brothers S1R Slip-On Exhaust Triumph Street Triple / R 2013-2017 Videos

Two Brothers S1R Slip-On Exhaust Triumph Street Triple / R

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 95.15 97.45 + 2.3
Max Torque ft-lb 46.11 46.74 + 0.63
Weight lb 7 4 - 13
Sound Level db 98 112 + 14
4.6 / 5
Bang For The Buck
5 / 5
Ease Of Install
5 / 5
Durability
4 / 5
This Product Fits:
Triumph
Street Triple 2013, 2014, 2015, 2016, 2017
Street Triple R 2013, 2014, 2015, 2016, 2017
Product Style RevZilla Item # Manufacturer Product # Availability
Carbon Fiber / Slip-On 985362 005-3980405-S1 In Stock: Ships within 24 hours

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 we'll 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.

Write a Product Review for a chance to win our monthly $100 giveaways.
4.8 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
8
2
0
0
0
Bang For The Buck
4.5 / 5
Ease Of Install
3.6 / 5
Durability
4.4 / 5
Bang For The Buck
5 / 5
Ease Of Install
1 / 5
Durability
5 / 5
Great slip-on, pain to install
I bought this to replace a Remus Hypercone in black finish for my '14 Street Triple R. Nothing was wrong with the Remus, but I had always had my eye on the TBR's (as well as the SC Project for the STR) and decided to give it a go.

Here are my thoughts comparing the stock, Remus, and TBR's:

Stock: Seriously, why are still riding with the stock exhaust. Thoughts on that not complete.

Remus (vs. TBR's): Great finish, great look great sound. I originally bought this because I liked the look of it the most. The conical shape looks awesome and the black finish complements my black STR very well. However, the matte finish looked poor after rides. It showed condensation very well and dirt. As well, it did not seem like it was going to hold up great. The carbon fiber on the S1R looks a bit more durable and like it will keep its looks longer. Sound wise they are very similar. I never put the baffle on the Remus and do not have the power tip(s) for the S1R. Yes, they are both loud, but I don't agree that the S1R is neighbor-annoying obnoxiously loud. Although they are similar, the S1R has a bit more of a "growl" and more of a throaty chainsaw vibe at higher revs.

I think the fit is better on the S1R too. I had air escaping a little bit where the Remus Hypercone met the header, but the seal on the S1R seems better with no air felt coming out. However, this may also be due to the fact that I chose to use a high-temp silicone sealant this time around.

As for install, the Remus was waaaaaay easier to install. The S1R was a pain with clearance and it took awhile to not have the end cap rest against the sidearm. Of course, this is negated when sitting on the bike, but still I didn't want the bike to touch. The trick I discover is to attach the springs AFTER getting the slip-on situated, contrary to the instructions from TBR's. This allows the ability to orientate the canister perfectly, get the proper clearance, tighten it to the bike, and then throw on the springs between the exhaust tube and the slip-on canister. Figured I'd share that bit of knowledge after an unseemly amount of time trying to get it right on the bike.

I already mentioned the looks of the Remus. The S1R has clean, aggressive look which follows the line of the STR very nicely. I originally didn't choose it because I thought it looked too stubby - like having a beer can for an exhaust - and that I'd grow tired of it as a novelty. But in person it looks great and fits the looks of the STR perfectly.

As far as maps, I've had the Arrow map downloaded since I bought the bike so I cannot attest to stock vs. any other map on either the Remus or the TBR's.

All-in-all, if I had to do it again, I'd get the TBR's straightaway and have saved the money on the Remus purchase. The Remus is by no means a bad slip-on, but, for me, the S1R edges it out on sound, look, and perceived durability.
July 8, 2015
Purchased
over 2 years ago
Ride:
2014 Triumph Street Triple R
Bang For The Buck
5 / 5
Ease Of Install
3 / 5
Durability
4 / 5
Give your Street Triple the (loud) voice it deserves
Just added this to me 2014 Street Triple and like my title says, it gives the bike the voice it deserves. It takes the bikes exhaust note from a high-pitched, uptight whine and turns it into a deep, guttural, fulfilling note. Idling it purrs (like a giant tiger) and under acceleration it screams like a racing bike. The best, though, is when you get off the throttle at high RPM's. The deep tone with a few little pops in there is just... awesome. I love how it sounds. My friends love how it sounds. Tunnels make me so happy.

Enough gushing...

While the exhaust sounds amazing the install process was a little troublesome. The (hanging) bracket that comes with the exhaust seems like its made for the canister NOT for the bike (like a universal part). It fits around the canister well but does not line up with the mounting location very well. I actually had to but a little bend on the bracket to make it fit right. If you do end up installing this yourself, be careful with clearances. They are tight! Once it's on, though, it looks awesome (see picture)!

I know I said it sounds amazing (and it does) but you need to be ready for how LOUD it is. Like two or three times louder than stock. It sets off car alarms. I wear earplugs when I ride anyways but now they are absolutely necessary. You've been warned.

I'm sure Triple riders will be wondering about this:
I had my local Triumph dealer put the Arrow Exhaust mapping on my bike. I did this right after I installed the exhaust so I don't really know what the bike rode or sounded like with the factory mapping. I do know that it runs great with the Arrow mapping. I have seen no difference in fuel mileage or performance.

I highly recommend this exhaust. If you're thinking about it I have two words for you:

Do it.
February 1, 2015
Ride:
2014 Triumph Street Triple
Bang For The Buck
5 / 5
Ease Of Install
5 / 5
Durability
4 / 5
Best Sound for the price
I love the Arrow sound on the triple R but it didnt have the pop on deceleration.
with this exhaust + the insert the bike sounds almost like the arrows and with the pop..
For the price, i would choose this exhaust anyday.. this is what a triple should sound like.. My buddy liked it so much he also installed it on his bike..
June 17, 2016
Ride:
2005 Honda CBR1000RR
Bang For The Buck
4 / 5
Just had it installed. I like. Keep a pair of earplugs on you...
I think it looks great, gives the bike a much more aggressive look, and I notice a slight boost in power.

What I really like is the sound. It's got bass, it growls and pops like a dragon. It screams at high RPM. A very, very noticeable difference - and I haven't even tried it without the P1X insert yet.

So far so good - if I have any issues or other thoughts through the season I'll update this review.
March 27, 2015
Ride:
2014 Triumph Street Triple R
Bang For The Buck
4 / 5
Ease Of Install
4 / 5
Durability
5 / 5
Good product
I really like the look of the pipe, and it's LOUD. I ordered the smaller baffle for it, and now my neighbors hate me less. Only thing I didn't like is that it had a thin metal sticker on one side that said "RACE PIPE, use on closed courses.......". I was able to carefully pry it off with a credit card and some persistence though, and there's no marks or residue where it was. All in all, happy with the purchase.
June 15, 2015
Purchased
over 2 years ago
Ride:
2014 Honda CB500F
Bang For The Buck
4 / 5
Ease Of Install
5 / 5
Durability
4 / 5
Roaring Loud
This thing is light and little. Don't let that fool you though. It's loud as f***, which is awesome. My brain felt like I went to a death metal concert for 8 hours after riding without earplugs a few times. I now always ride with earplugs since I've got this thing. I am awaiting the P1X insert to tame the dB levels. It sounds great otherwise. I've noticed a performance increase as well and I'm sure it'll get better once I get the Arrow map flashed to my ECU.
November 24, 2014
Ride:
2013 Triumph Street Triple
Bang For The Buck
5 / 5
Ease Of Install
5 / 5
Durability
5 / 5
Perfect fit, finish and sound
Excellent pipe. Ships with everything you need to install, simple and easy. It's loud, no doubt about it. I'm a fan of both the volume and tone some might find it excessive. Ear plugs are a must. The fit and appearance on the bike are perfect, low and tight to the rear swing arm. Major weight savings is a bonus, the stock unit is a beast.
April 6, 2015
Ride:
2014 Triumph Street Triple R
Bang For The Buck
3 / 5
Ease Of Install
4 / 5
Durability
4 / 5
Good stuff is expensive
Have had it for a few months at this point. In general, I am very satisfied with this slip on exhaust.

Install was as easy as I had read it would be. As mentioned by others, the band that secures the exhaust does not line up with the screw to secure it. I had to bend/force the band a little. Initially, also, I noticed that my rear brake made contact with the exhaust when applied but a slight twist of the slip-on exhaust fixed that issue.

It is LOUD. I bought the DB killer thing but have not installed it yet. I like the popping produced when downshifting and love the roar when the rpms are way up. In low rpms, however, its just loud. Thinking of trying the DB killer to make it a little more palatable but I don't want to lose the roar or the popping. We'll see.

Ear protection is necessary on long rides as you will get a headache. I use SHURE earphones for music but wear them even without music to block the noise on long rides.

Overall, I like the exhaust. I wish it was not this expensive but understand how the market works. I suspect its sound impresses me more than spectators but I definitely feel safer on highways; no one has merged onto me since I bought it. Will update this if I find anything groundbreaking with the DB killer.
December 2, 2015
Ride:
2013 Triumph Street Triple
Bang For The Buck
5 / 5
Ease Of Install
2 / 5
Durability
5 / 5
Great sound, great finish, semi-tricky install
Overall this a great pipe with solid looks and wonderful sound. The only real issue I had was during install on my 14 Street Triple. No matter how I angled it, the brake pedal just hits the can. Not enough to cause any real damage, but it still hit which annoyed me. Luckily I was changing to some Driven rearsets which I figured would free up some space. Still hit the brake pedal. So I took out a rasp file and knocked off some extra metal on the back of the pedal that wasn't doing anything, and it fit like a charm. Then, I yanked off the yellow Two Bros sticker. It's god awful color just clashes against the rest of this bike. Without it, this is a slick looking little can that garnered a lot of complements at a few track days this summer.
November 28, 2015
Ride:
2013 Triumph Speed Triple
Bang For The Buck
5 / 5
Ease Of Install
3 / 5
Durability
4 / 5
Awesome buy
Bought this for my 2014 street triple. Adds a nice throaty note to the exhaust to drown out the stock whine. Increased low end on the throttle and rips when you get higher in the rpms. Follows the lines of the bike and shaves a few pounds off too. All in all, awesome buy.
April 27, 2015
Ride:
2013 Triumph Street Triple
Use our Product Q&A for a chance to win our monthly $100 giveaways.

Have a functionality, fit, or otherwise product-specific question about the Two Brothers S1R Slip-On Exhaust Triumph Street Triple / R 2013-2017? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 33 questions Browse 33 questions and 22 answers
Why did you choose this?
RevZilla Store
Made my wifes Triumph sound amazing
charles r on Apr 29, 2016
Best appearance and angriest sound.
seth m on Mar 17, 2015
Made my wifes Triumph sound amazing
charles r on Apr 29, 2016
Fun to ride, looks a little weird, corners and handles like a dream.
Martin S on Apr 19, 2015
Best appearance and angriest sound.
seth m on Mar 17, 2015
Fun to ride, looks a little weird, corners and handles like a dream.
Martin S on Apr 19, 2015
Does it come with a cat delete for 2016 Triumph Street Triple or is it just a slip on from cat back? Thanks!
RAYMOND H on Feb 5, 2017
BEST ANSWER: It's a slip on from the car back. It's awesome!
Does this require a remap?
A shopper on Apr 29, 2015
BEST ANSWER: I actually went to the To Brothers site and asked their support the same exact question. They responded that it was not needed. But, it wouldn't hurt. I have been riding with this exhaust for about 4 weeks now.. pretty spirited riding as well and haven't seen or noticed any negative side-effects.
So, does the S1R come baffle-less? And, if so, is the option to purchase either the P1 or P1X power tip? Does anyone have experience with either or both of the power tips? I've read that the P1 does very little, if anything at all, to dampen the sound - thoughts?
Benjamin F on Jul 5, 2015
BEST ANSWER: It does come baffle-less. I ordered the P1, it's a noticeable change at low RPMs, but I don't think it does much at higher revs. My riding buddies still say it's damn loud when riding behind me. I'm still happy with it, because I think it's a not obnoxiously loud when stuck in traffic or stopped at a light.
Is this compatible to both 2015 Triumph Daytona and 2015 street triple?
A C on Feb 13, 2017
Hey guys, I am considering buying this exhaust for my Street Triple but I am between the S1R and the Leo Vince Factory R EVO II. Would you be able to give me some pros and cons for each exhaust to help me decide? Why would one chose one over the other? I having a tough time deciding...

Tks!
Dan
A shopper on Jul 12, 2015