Manufacturer: ACT (Advanced Clutch)
Part Number: ZM8-HDSS
Condition: New
Product Description:
ZM8-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 organic materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs have reduced marcel for faster shift action to complement ACT pressure plates, with increased strength and reliability.
"Excellence in Performance", backed by the best one-year warranty in the industry!
Light to moderate pedal effort, smooth positive engagement, OE to mild gear rattle
Longer friction life, extended by ACT's exclusive diaphragm design
Carefully engineered, precisely assembled, accurately balanced, with premium organic friction materials for heat tolerance and reduced fade
Recommended for street and race use
100% clamp load tested and dynamically computer balanced for smooth high RPM reliability
Additional Information:
ACT 2004 Mazda RX-8 HD/Perf Street Sprung Clutch Kit
Pilot Bushing Included: Yes
Pressure Plate Type: Heavy Duty
Release Bearing Included: Yes
Clutch Disc Diameter: 9.4 IN
Clutch Disc Diameter: 240 MM
Disc Material: Organic
Input Spline Quantity: 23
Input Shaft Diameter: 1 IN
Alignment Tool Included: Yes
California Proposition 65: Warning: This product can expose you to chemicals including carbon black, glass wool fibers, or silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit
Part Fitment Requirement: Flywheel requires counterweight (flywheel and counterweight sold seperatly or with flywheel kit). Must use ACT counterweight with ACT flywheel.
Product Weight (lbs.): 15.6
Title: ACT HD/Perf Street Sprung Kit
Torque Capacity (ft/lbs.): 330
Torque Capacity Over OE: 34%
Guaranteed Fitments:
2004-2011 Mazda RX-8
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