Two Brothers M2 Black Series Exhaust System Kawasaki Ninja 650R 2012-2016
Really happy with it
I'm really happy with how this sounds, any videos you watch don't do it justice. Its a very loud, throaty sound and it sounds fantastic. It finally gets rid of the pathetic weedwhacker sound of the stock exhaust. Super easy to install took me less than an hour.
June 15, 2016
When I purchased my new 2015 Ninja 650r , I was in love with everything about it.... except the lawnmower sound the exhaust would put out. FIRST thing i did was purchase the two bros exhaust and it took about 30-45 min to install (Cake).
The Sound : It sounds like gun shots being fired when you down shift and let go of the throttle. I love it ! lol Cars most definitely know I am coming which is what the primary reason for replacing the exhaust. The sound again is just bitchin. Videos do NOT do this exhaust justice. i was on the fence when i listened to the videos but i read reviews and man were they right. It just blows your ear drums away lol .
Additional benefits were that it made the bike significantly lighter, while also increasing the power (not crazy). While the power increase is slightly noticeable, its nothing to write home about, but it is there.
Overall, highly recommend this upgrade, and the cool thing is that for the price you get the full exhaust upgrade and not just a slip on (which you can't do on the newer 650s). So thats kind of cool !
May 22, 2016
This exhaust will really step up the performance and sound of your bike. The YouTube videos don't really do it any justice, buy this confidently knowing that your bike will have an amazing throaty growl that compares to no other. I've been riding with this pipe for the last month, and it constantly puts a smile on my face when I hit the gas.
In terms of installation, it was about what was expected. The biggest annoyance during the install was actually screwing down the clamp to the bracket on the slip-on. It was extremely tight, and I actually had to have a friend squeeze the clamp together with a wrench while I put the screw through. The only other comment would be the extremely tight tolerance of clearance between the slip-on and the tire. I followed all the instructions and made sure to tighten everything after checking the clearance. There is about 1/4" between the tire and pipe, but when sitting on the bike it gets a little bigger due to compressing the suspension. Based on other's reviews it seems like this is a common occurrence and shouldn't be worried about.
In the first 5-10 minutes of operation you will notice sparks coming out of the back end when it back-fires. This is just the leftover oil chemicals being burned out from the factory, nothing to worry about. For those wondering, I also installed the power commander V with proper settings for this exhaust, and a K&N filter. During normal riding, laying off the gas after accelerating fast will cause some backfire popping. It doesn't bother me, in fact actually sounds pretty cool.
All-in-all, this is an extremely amazing looking, sounding, and performing exhaust and I definitely recommend it!
May 13, 2016
Only looks Good
Only positive things to say is that it looks good and was easy to install. It is too loud. Installed the regular db elimination and still too loud so I contacted TBR about getting the db below the legal 95 rating. They said the PX1 will do it with ease. Nope only reduced it by about .5. Still too loud. I don't know what TBR will do when tracks start regulating the db to 95 like everyone else.
Performance is meh... It does reduce weight a lot and you get a little extra power but not worth the price. In the end, I put back on my stock exhaust and removed the Juice Box Pro as well. May look into a Leo Vince system.
March 21, 2016
Definitely a big upgrade from stock exhaust. Cars used to love lane switching towards me because they didn't hear me coming and that definitely doesn't happen anymore lol. It has a mean, low pitched roar which I prefer over the usual high pitched sports bike. Also I recommend the carbon fiber one...so pertyyyyy and worth the extra money. Also if you install it and get backfiring popping sounds from it like I did, go back through and make sure all the bolts are tight. I did and it fixed the problem.
March 6, 2016
Cars absolutely notice me more
The performance gains are not very noticeable but it succeeded in making my bike neigh-obnoxiously loud. It's a very beefy and satisfying sound however, almost like a V-twin at lower RPMs.
Engine braking already sounded awesome with the stock pipes, but with the two bros pipes it's ~so~ good I can't help but engine brake constantly these days. Between the engine braking and modular helmet I feel like im piloting a jet or something.
Now it's not all great. Even with a power commander and a two bros specific fuel map; there is still a fair amount of popping if you quickly roll off the throttle to engine brake. There is a ridiculous amount of popping if you drop a gear a gear or two and rev match to engine brake. Maybe a dyno tune or auto-tuner for the power commander would alleviate these issues; but I haven't had the chance to get either yet.
December 2, 2015
I just put this on my 14 Ninja 650R and I couldn't be happier. It looks great and sounds amazing. The installation couldn't be any easier either. On 12-15 Ninja 650R the install should only take 30 minutes. DO NOT remove the fairing, simply take the three plastics clips off from the bottom and DO NOT completely remove the foot rest, just take the bolts out and you will be able to remove the bolts holding the stock exhaust. If you have a 650 you will love this exhaust.
July 7, 2015
Good product, but a few caveats
I put this on my ninja 650 2 weeks ago and went without the juice box, and used the P1 tip that came with the system. It was obnoxiously loud, and not in a good way. Sounded rough. Chainsaw-ish. Made my engine sound unhealthy. Also it backfired loudly, constantly.
The power may have been higher at 6000 rpm+, but there was a huge loss in the low/mid RPMs, so I'd pull the throttle, make a lot of noise, and have to wait a second for the acceleration to arrive.
I theorize that most of this was due to the fuel not being mapped for such low back-pressure, and that the juice box would solve this, however I was hesitant to shell out another few hundred at this point. Enter the P1X tip.
Looking at the two tips, you might not think that a small extra bit of metal would make such a difference.. .but it did.
The sound is back to a reasonable level where I don't feel like I'm being obnoxious and desperate for attention. And it sounds good, rather than rough. Powerful, not harsh.
The backfiring is 99% gone, except for a little pop now and then if I close the throttle going downhill.
And the low/mid power is back. The throttle response is better than ever. Haven't noticed a loss of high-end power, but maybe I lost 1 hp at 9999rpm. I'll survive.
I may get the juice box now, but I would not recommend going with the P1 tip on this bike.
Some general notes:
The weight savings are enormous, maybe 15 pounds. You can feel it in the handling, big improvement.
This system looks much nicer, the stock one is hideous. Why do companies produce these even uglier shapes of useless metal trying to cover their mufflers?
Install would have been simple, but the bolts holding my foot peg assembly on were caked on heavily and not even liberal amounts of WD40 would loosen them. I ended up stripping the bolts and had to get the stock exhaust off without removing the footpeg assembly, which took a couple of hours and lots of cursing. The trick ended up being to remove every other bolt and jiggle the stock exhaust around a bit until I could yank it into a position where my socket would reach. I don't blame 2bros for this difficulty though, it would have been much easier if my footpeg assembly had been willing to come off.
June 15, 2015