Join Date: Aug 2015
I Ride: 2015 ZX-6R 30th Anniversary Edition
Go for a pinebox exhaust system. They are pretty bad ass. Or Leo Vince if you wanna go for more of a performance gain upgrade. Just depends on what kinda sound you want out of the bike. Akra full system will give you the most performance gains but obviously wont be the loudest. I've had a Leo Vince, Vance and hines and an M4 Street Slayer on my 2015 636. I'm digging the M4 the best at the moment.