ZM8-HDG4 - HD/Race Sprung 4 Pad

Specifications: HD/Race Sprung 4 Pad Clutch Kit

• Item Description: HD/Race Sprung 4 Pad
• Product Weight (lbs.): 15.4
• Torque Capacity (ft/lbs.): 420
• Torque Capacity Over OE: 72%
• Disc Material: Ceramic
• Clutch Disc Diameter (Inches): 9.4
• Clutch Disc Diameter (Millimeters): 240
• Input Shaft Diameter (inches): 1
• Pressure Plate Type: Heavy Duty
• Warranty: 12 Months

Description: The ZM8-HDG4 kit by ACT features their renowned Heavy Duty pressure plate. These pressure plates utilize an exclusive diaphragm design to enhance clamp load, diminish deflection, and maximize clutch life. Each diaphragm undergoes a four-stage heat-treating process for exceptional performance. Precision cover stampings ensure rigidity and consistency.

The 4-pad spring-centered race disc in this kit features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. This disc type is well-suited for smaller disc sizes in smaller engines.

Key Characteristics:

• Feel: Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle.
• Life: Moderate friction life, extended by ACT's exclusive diaphragm design.
• Quality: Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance.

Recommended Use: Recommended for high horsepower street or race use, ideal for applications where durability and high performance under extreme conditions are essential.

ACT Difference: 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability.

Vehicle Fitment: Compatible with various Mazda RX-8 models ranging from 2004 to 2011, equipped with the 1.3 R2 GAS FI 1308cc engine.