i have one of the extension kits on mine. been on for 2 years and ive put it through a lot at the track and at my riding spots. Cant complain no problems with it other then you have to loosen all the bolts to tighten your chain
whats your guys opinions on cranks for a yz 250? my stock crank has a groove in it from the bearings going out and i dont think it can be fixed. Ken o connor doesnt recommend running weisco or hot rod cranks in these motors. can any one help me out