ACT Heavy Duty Performance Street Clutch Kit – 2017-2019 Honda Civic Si

Unleash the true performance of your Civic Si with the ACT Heavy Duty Performance Street Sprung Clutch Kit (HC10-HDSS). Designed for drivers who demand more from their clutch—whether on the street or occasional track days—this kit delivers increased torque capacity, smooth engagement, and long-term durability.

Key Features & Benefits

• Enhanced Torque Capacity: Supports up to 363 ft-lbs of torque—an impressive 63% increase over OEM capacity.
• Performance Organic Street Disc: Made from premium organic materials with high copper content for improved heat dissipation, plus a steel-backed lining for superior burst strength and longevity.
• ACT Heavy Duty Pressure Plate: Features a proprietary diaphragm design that boosts clamp load while minimizing deflection and maximizing clutch life.
• Street-Optimized Design: Reduced marcel spring ensures faster shifts and more responsive engagement while maintaining a light to moderate pedal feel.

Technical Specifications

What to Expect

• Feel: Light to moderate pedal effort with smooth, positive engagement and OE to mild gear rattle.
• Longevity: Longer friction life, thanks to ACT's exclusive pressure plate engineering.
• Build Quality: Precision engineered, carefully assembled, and dynamically balanced for high-RPM reliability.

The ACT Difference

Every ACT clutch is 100% clamp load tested and dynamically computer balanced to deliver consistent performance and smooth operation—even under aggressive driving conditions. Ideal for both daily drivers and weekend warriors looking to step up their game.