High Performance Replacement Primary Clutch Rollers

Replacement 14.7mm and 15.7mm primary clutch rollers. These exclusive SBM rollers are the same ones that are used in our clutch kits.  The outer roller shells are Rockwell 70 hardened material and are slightly wider than the factory rollers.  This gives them long life and silences the side rattle that is apparent from the factory. Our internal Rexnord Duralon bushings are tougher than the OEM plastic Vespel bushings and made for extreme use. Our rollers can be purchased separately as a replacement part for tuning engagement and shift RPM. Call Chris for technical tuning advice and orders.