Advanced Clutch HD/Perf Street Sprung Kit (GM12-HDSS) PPE_CeramicCoating_4 4212104 is a 4-pad spring-centered

4212104 is a 4-pad spring-centered race disc made with high quality

If used with stock midpipe

3001603 is a performance street disc and the most popular disc purchased

aggressive exhaust note under acceleration while maintaining a smooth

Bolts to stock or aftermarket axle-back mufflers

Advanced Clutch HD/Perf Street Sprung Kit (GM12-HDSS) PPE_CeramicCoating_4 4212104 is a 4-pad spring-centeredGM12 HDSS kit features ACT's most popular Heavy Duty pressure plate and most popular street disc. 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. ACT's Performance Street discs feature premium