hays Offers A Complete Line Of Street Performance Clutches Which Exceed Oem Specifications And Feature Value And Performance. For A Smooth, Clean Engagement, Crisper Shifts And More Driving Enjoyment Without Excessive Pedal Pressures In Your Daily Street Driven Vehicle, Use The Hays Street Performance Clutch The Hays Street Clutch Discs Are Designed To Provide Clean, Smooth Engagement And Provide A Significant Performance Increase Without Sacrificing Streetability. These Discs Feature Organic Friction Material That Is Rivetted To A Spring Marcel Backing, And A 5 Spring Centre Hub To Absorb Drive Line Torque, Eliminating Shock And Vibration To Insure Chatter Free Engagement.