Precision Performance Clutch® stage 4 clutch kit is a direct factory replacement clutch kit and it's designed for those who seek the ultimate in clutch performance and reliability. PPC clutch kit includes only the highest grade clutch components from the world's leading racing clutch manufacturers. The 6-puck copper ceramic (also known as MIBA) disc features 12 high-coefficient friction pads that are resistant to slippage and ensures long lasting life. The heavy-duty solid spline center unit boasts heat treated chromoly for the maximum power and durability. The PPC pressure plate features special single diaphragm design to increase clamp load. It features induction hardened diaphragm, CNC machined castings, stronger drive straps and rivets. PPC pressure plate provides smooth and precise feel with easy modulation. All PPC pressure plate is load tested on a special testing tool for quality assurance.