Originally Posted by Voltaire
The bolt on ones have threaded 12mm aluminium sleeves that replace the motor mounting studs, The rear frame mount has been left undrilled/tapped to facilitate correct engine/tranny/drive alignment.
I like it as its non invasive and can be reversed if bike is not longer on race duty.
So is shimming the driveshaft not required? I thought I read somewhere that some shimming was required when raising the motor.