My buddy bought a 99 KX65 for his kid. He was getting off a pw80 and to say there's differance would be an understatment. The kid, scared crapless rode the bike in first gear until the topend roasted. My buddy brought the bike to the shop to get parts and his salesmen told him to bring the bike in instead. They replaced the topend and the crank! NO CHARGE! I could not beleive it. That's great!