Originally Posted by skwidd
...,simply too much money to build and maintain a winning or just worn out 4 stroke. Like Honda says in their CR250F owners manual..
20 hours remove and inspect top end.
What?! My '03 CRF450R manual said new piston every 15 hrs!?
I went more like 20 times that and the cylinder looked fine both times. It was the best bike I ever owned!