[dwint51]

I know this subject has been beaten to death but my crank is close to being stripped and don't want to take it apart to much.i was using 4.5 rollers in my miarelli and then installed 1500 rpm clutch and torque springs and performance went down hill .way to many rpms.i heard when installing a pipe which I just bought a stage6 pro rep but haven't rode yet but should I be in the ball park cause I need the rpms?ive heard nothing but good with the 1500 combo so they stay I think.now its a guessing game with the rollers.i also have a performance variator.