I have 2001 Yamaha ttr225. The bike starts up the first time every time and idles fine. the engine runs perfect. The problem is it takes off and drives very sluggish. no torque at all. the engine revs up fine but the bike just doesn't move. My first thought was the clutch. had that replaced with a HD clutch kit. everything was replaced except the clutch basket. That didn't solve the problem at all. so now i have dirtbike with an engine that runs great and a brand new clutch. yet a kid on a skateboard would beat me in a race. Any thoughts on what else the issue could be?