Yoshimura RS4 Race Exhaust System Kawasaki Ninja 650R 2012-2016
Compared to stock it's lighter flexible because it's 2 pieces and the sound is amazing I do not have a power commander and its still very good
June 14, 2016
Just purchased this for my 2015 Ninja 650 ABS. Couldn't ask for a better experience as a rather new rider. Received it in just less than 24hrs with regular standard shipping. It looks absolutely amazing and sounds even better than expected. Not obnoxiously loud, but gives it a much lower/tougher sound that you can't resist after dealing with the very quiet stock exhaust. Installation couldn't have been any easier and I know very minimal about mechanics. Because it is so much smaller/lighter than the stock you can easily notice the little weight difference on the bike. You can also easily feel the difference in the slightly more HP that you get with this. No doubt will recommend to anyone and everyone. Very impressed and couldn't be more happy. GREAT BUY!!!
March 10, 2016
My first major mod
This was my first time doing anything more than a fender eliminator kit, and it went off without a hitch. The directions are very clearare and easy to understand, and the parts fit my bike perfectly. The only tough part was removing the baffle (silencer) to get that full sound, but otherwise everything went smoothly. Looks great on my bikeys and the sound is savage AF!
August 24, 2015
Transformed my bike from a house cat to a ferocious jungle cat
I was debating between this and the other exhausts for the Ninja 650s for quite some time for my 2014 Ninja EX650. Watched all the videos I could find and read all the reviews. When you're dropping over 500 big ones you want to make sure you get something you like, right? Well, I definitely like! This exhaust is a monster! It's got a very deep growl to it. Sounds absolutely amazing and now people can actually hear me coming down the street.
I removed the silencer so I can't comment on what it sounds like with it in, but I would recommend removing. Pretty simple, unscrew the allen bolt and then comes the fun part of getting it out. I personally took both my thumbs and stuck them in the pipe and just pulled until it came out far enough that I could get a pair of channel locks around it and wiggled it out. Just make sure you tape off the channel locks so you don't scratch it to pieces.
August 14, 2015
This is the best sound to performance ratio for the ex650 I have found, and let me tell you I did 6 months of research before I made my purchase. The silencer was a bit difficult to take out, more so than the Internet made it seem but well worth it. The installation was easy except for one bolt is hidden and very hard to reach with anything but a short socket with a knuckle adapter. So I recommend buying one if you're going to install it yourself. The instructions recommend cleaning the pipes with alcohol before you start it for the first time to stop the fingerprints from messing up the finish...it made a huge nasty swatch of corrosion on the header. I do not recommend you do that, maybe just a good dry microfiber rag instead. Other than that great improvement for the ex650 looks great as well!
May 14, 2015
The Perfect Exhaust.
It's a beast. The sound is so good and the price is excellent. You don't even need a power commander or juice box for this exhaust.
May 7, 2015
I'll keep this short and sweet. This is an awesome exhaust in all aspects: sound, looks, performance (according to my butt). Just get it.
It gets rid of that motox stock sound of the Ninja 650, and replaces it with a low deep mean growl that definitely grabs the attention of bystanders and motorists. I definitely use it frequently to make my presence known to an inattentive car driver swaying into my path (it's not like there's many of those...........).
It sounds amazing without the db killer, but will definitely hurt your ears without earplugs after a while, and neighbors might complain at late hours. The silencer does a good job of lowering the sound level output but at the expense of some meanliness low deep growling, but it also saves your ears (Even if your ears don't hurt at that exact moment, high volume exposure to them will hurt them permanently over time and you can't get it back, so protect your ears at all time).
FYI: for those looking for a replacement db killer / 'low volume insert' this is the part you need:
April 3, 2015
Best I've found for a 2012-2015 Ninja 650
Researched exhaust manufacturers / reviews / listened to a bunch of clips and found that, hands down, this exhaust is the best sounding of the lot in my opinion.
Great build quality, very easy to install(Don't even need to remove fairings) and looks amazing. Not sure if I noticed substantial, if any, performance gains. I bought it mainly for the sound/look -The silencer was the first thing to go.
So if you're on the fence about which exhaust to go for on the Ninja 650 I highly recommend checking the Yoshi RS-4 out.
February 9, 2015