ACT CLutch Kit: Mazda RX7 Turbo 87-91, ACT-Z65-XXR4-KITKit comes with MaXX pressure plate, 4 pad rigid race disc, release bearing, pilot bearing, alignment tool, & can hold up to 625ft lbs of torque. Note: Flywheel requires Counterweight (Not included). Z65 XXR4 kit features a MaXX pressure plate for the serious enthusiast. ACT MaXX 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