Clutch Kits, Upgrade DRC Aramid Fiber Series, Heavy-Duty Plates With SpringsDo not use fully synthetic oil.Anti-swell, alloy impregnated heavy-duty, cork-based facings provide smooth clutch take up and allow modulation, unlike paper clutches which tend to snatchComplete engine set of friction plates, HD springs and steel separator plates prevent premature driven plate wear, oil muddying and loss of stack heightEBC DRC kits are built with swaged aluminum carriers which spread the load on the clutch basket and prevent clutch basket "dogging"