hey all ive got a runner 172 malossi variator malossi secondary gear up and a polini primary kit i had heavy rollers in but i ordered some 12.5g rollers as alot of people here use them on there 172's now that ive put these rollers in the bikes great but there is a vibration at high revs what could this be rear bushes?? any one have any idea what it could be please help ...cheers deacon
if its a stock crank its probably just that.. there pritty shit tbh.. check the usual tho, warped clutch bell is a big vibrator (considderting it gets to over 10 times the rpm of the crank) check the variastor shaft/pulley to see if tis running true..
