Want to here from you guys who have done ,or know somebody who have replaced there gears in there YZ450F with the WR450 tranny gears, for the wide gear ratio I read a couple of days ago. Also who is this good for? THe trail guy, supermoto, THe hair scrambler? I always think that i'm in the top of fourth gear on those long open roads, when i am really in fith. I mostly trail ride very little track riding. The 07WR450 gears will fit my 06YZ450F?