Shortened exhaust cans
I took 1 1/4" off each can on my 06 ZX10r. Along with a definitely deeper exhaust note, it made a huge difference in the look of the bike! My only concern was loosing to much back pressure as I already have removed the butterfly valve in the exhaust, but actually seems like I gained throughout the rpm range. Seems to pull alot harder in the lower rpm's, gonna have to get on the dyno soon to confirm. Ill post a pic a little later of before and after.