hi people just got myself a wild zvh frst im thinking of changing the exhaust as the 1 thats on is knocking like fxxk when in idle and on the move it is 4inch from turbo to the end it has stage 3 turbo,,will a normal frst exhaust fit right on and a quick 1 it has 4 pot calipars on i want to change the pads what type will i go for...

cheers guys