As engine power and torque levels increase, Powergrip Clutch sets meet the challenge. Powergrip utilizes a unique blend of 900 and 300 series friction materials and increased clamp loads to give you the holding power needed for aggressive street driving, occasional drag strip use, and the all around performance you expect from your clutch system. Some chatter will occur on takeoff. Use Powergrip for modified street/strip cars. Part may vary from picture.