Re: RPM's shoot up, bike doesn't gain speed
sounds like a clutch issue to me. did you make sure you had the right amount of freeplay in the clutch lever? if you dont have enough freeplay it will make the clutch slip all the time, and wear it out quicker. try putting some slack in your clutch line. a little too much slack is better than not enough. if that doesnt fix it, then i would say drain the oil, and pull the side cover off, and check the clutch drive plates and the friction material to see if thats the problem. replacing the friction disks isnt a big job, it can be done in 4 hours by a noobie.