I recently decided to change the exhaust for 650r. Theres a ton of choices out there with Arrow, Akrapović, Sc, toce and more. Most systems are around 1200$ or more and are well documented.
The other approach was to go with cheaper parts and make my own exhaust essentially, but with such few documentation online, i decided to make this post in the hopes that it can help other people.
The only 2 parts i paid for are the full exhaust from Amazon for 350$ and a fake SC project slip-on for 50$. Both were available for even cheaper on various sites but i chose amazon for the ease of return in case it didnt fit.
Installation was super simple, i followed this to remember what screw goes where.
Then i made a custom bracket with plumbing galvanized steel tape and the Z shaped part bolted is actually a metal strip i cut, folded and painted to fit there.
The end result is loud as fuck so im waiting to receive a baffle to tone it down a bit but it sounds amazing. It runs richer than before so ill swap the filter for a better one and should balance that out.
Im by no means a professional, just wanted to share my experience as ive not seen a lot of details online for those cheap chinese exhaust systems.