i hate to say this on a banshee fourm and being i own one too......but ive owned a Z400 and still do .....i bought it when i was between shee's....i have a pipe on it, cams, carb, and CDI box.......and ill tell u what....i beat quiet a few shee's of the way up bullgap......made me wonder if these people on those shee's can actually ride????.....im 200 lbs vs a 140 lbs kid on a piped, and jetted shee with a boost bottle and a CDI box and i had him by about 3 maybe 4 quads....