Z65-HDR4 - HD/Race Rigid 4 Pad

Product Description: HD/Race Rigid 4 Pad Clutch Kit

The HD/Race Rigid 4 Pad Clutch Kit, identified as Z65-HDR4, is meticulously engineered by ACT to meet the demands of race enthusiasts seeking top-tier performance and durability. With a weight of 14.4 pounds and a torque capacity of 420 ft/lbs, exceeding OE standards by 72%, this clutch kit ensures superior power transfer and performance. Featuring a ceramic clutch disc material with a diameter of 9.4 inches (240mm) and an input shaft diameter of 1 inch, it guarantees robustness and reliability under extreme racing conditions.

At the core of this kit lies ACT's renowned Heavy Duty pressure plate, renowned for its ability to increase clamp load, reduce deflection, and maximize clutch life. Utilizing an exclusive diaphragm design and undergoing a meticulous four-stage heat-treating process, the Heavy Duty pressure plate delivers exceptional performance and longevity. Precision cover stampings provide rigidity and consistency, ensuring reliable operation under the most demanding racing scenarios.

Paired with the Heavy Duty pressure plate is ACT's 4-pad rigid race disc, crafted from high-quality ceramic friction materials. The chrome-moly hub is heat-treated for strength and durability, while the lightweight, rigid design enables quicker shifts and trouble-free service. Although engagement may be harsher with the 4-pad rigid race disc, shifting is faster, making it ideal for race applications where quick gear changes are essential.

Key Features:

• Feel: Light to moderate pedal effort, aggressive engagement, with increased gear rattle.
• Life: Moderate friction life, extended by ACT's exclusive diaphragm design, though the rigid design may increase spline wear.
• Quality: Carefully engineered, precisely assembled, and accurately balanced, utilizing select ceramic friction materials for high heat tolerance and maximum performance.
• Recommended Use: Specifically recommended for race use only, catering to the needs of racing enthusiasts seeking top-tier performance.
• ACT Difference: Rigorously tested to ensure 100% clamp load and dynamically computer balanced for smooth operation, even at high RPMs.

Vehicle Fitment: This clutch kit is compatible with various Mazda RX-7 Turbo models from the 1986 to 1991 model years, including:

• 1986-1991 Mazda RX-7 Turbo
• 1988 Mazda RX-7 10th Anniversary

For racing enthusiasts in search of uncompromising performance and durability on the track, the HD/Race Rigid 4 Pad Clutch Kit from ACT is a top-tier choice, providing the reliability and performance needed to excel in competitive racing environments.