I have a crf150r and i need to know how long before i need to have a top end rebuild. With me replacing the air filter, oil, ect after every ride. Also i ride in the trails so i dont ride it so hard.
unless it's having problems you don't really need to rebuild the top end.... you don't need to rebuild the top ends on these bikes all that often, especially if it's only on trails....
do you have a manual for it? it should give you some sort of refrence... but again you're not gonna have to rebuild as often as a MXer...
