ACT [90-91 Civic, 90-91 CRX] Sport/Race Rigid 4-Pad Clutch Kit

The ACT HC4-SPR4 clutch kit pairs a Sport pressure plate with a 4-pad rigid race disc for 1990-1991 Honda Civic and 1990-1991 Honda CRX race applications. The Sport pressure plate uses ACT's exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life. ACT's 4-pad rigid race disc is made with high quality ceramic friction materials, and 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. Part number HC4-SPR4 (as listed in legacy data; official verification pending).

• Light to moderate pedal effort, aggressive engagement, increased gear rattle
• Moderate friction life, extended by ACT's exclusive diaphragm design; rigid design may increase spline wear
• Exclusive diaphragm design increases clamp load, reduces deflection, and maximizes clutch life
• Four-stage heat-treated diaphragms for unparalleled performance
• Precision cover stampings provide rigidity and consistency
• High quality ceramic friction materials for high heat tolerance and maximum performance
• Heat-treated chrome-moly hub for strength and durability
• Lightweight, rigid design allows quicker shifts and smooth, trouble-free service
• Harsher engagement with faster shifting than stock
• Carefully engineered, precisely assembled, accurately balanced
• 100% clamp load tested and dynamically computer balanced for smooth high-RPM reliability
• Recommended for race use only
• Backed by ACT's one-year warranty