ACT HD Race 4 Pad Unsprung Clutch


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SKU: ACT SB8-HDR4 Category:


This Performance Race 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 an exclusive four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT’s 4-pad rigid race discs are made with high quality, ceramic friction materials. The chrome-moly hub is heat-treated for strength and durability. The lightweight, rigid design allows for quicker shifts and smooth, trouble-free service. With the 4-pad rigid race disc engagement is harsher, but shifting is faster. The 4-pad rigid race disc is well-suited for the smaller disc sizes in smaller engines.

**Recommended for race use only
Torque Capacity (ft/lbs.): 345 estimated
Feel/Engagement: A low to moderate pedal feel; aggressive engagement with stock to low to moderate gear rattle
Life: Longer clutch life achieved through ACT’s exclusive diaphragm design
Quality: Premium ceramic friction materials provide low wear rates and high heat tolerance
ACT Difference: All ACT pressure plates are dynamically computer balanced for smooth operation at high RPM
Parts included: 4224018, 600700, AT90, PB1004, RB004, SB017
Weight: 23.4 pounds

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