1991-1998 Porsche 911 HD/Perf Street Rigid Clutch Kit by ACT PO1-HDSD kit features ACT\’s most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. The ACT performance street rigid-hub discs feature premium organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. The chrome-moly hub is heat-treated for strength and durability. Rivet design and materials are carefully selected for maximum strength. These discs are the minimum weight street disc for faster shifts. ACT\’s street rigid-hub discs provide race-proven performance with street manageability. Features Product Weight (lbs.): 13.8 Torque Capacity (ft/lbs.): 690 Torque Capacity Over OE: 30% Disc Material: Organic Clutch Disc Diameter (Inches): 9.4 Clutch Disc Diameter (Millimeters): 240 Input Shaft Diameter (inches): 1 Pressure Plate Type: Heavy Duty Benefits Light to moderate pedal effort Smooth positive engagement Increased gear rattle Longer friction life Rigid design may increase spline wear Heat tolerance and reduced fade 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability Applications 1991-1998 Porsche 911 What\’s In The Box? 1 – ACT HD/Perf Street Rigid Clutch Kit Warranty ACT 1-Year Limited Warranty