Complete engine set of friction plates, HD springs and steel separator plates prevent premature driven plate wear, oil muddying and loss of stack heightNot for use with 100% synthetic oilAllow modulation, unlike paper clutches which tend to snatchBuilt with swaged aluminum carriers that spread the load on the clutch basket and prevent clutch basket "dogging"Anti-swell, alloy impregnated heavy-duty cork-based facings for smooth clutch take-up