So guys I finally put a cam in my bike to finish off all the other mods !!! 05 crf was the choose for me, has the best spread of power with least bottom end lost,, mind you its hard to judge cause I brought a 700xx and have been thrashing that, it has tons of tourqe so getting off that and on to the R is like getting off a four stroke and on to a two stroke :lol2: Anyway my R is going insanly fast at the moment the cam realy livend up the other parts