ZM4-HDR4 - HD/Race Rigid 4 Pad

Specifications: HD/Race Rigid 4 Pad Clutch Kit

• Item Description: HD/Race Rigid 4 Pad
• Product Weight (lbs.): 12
• Torque Capacity (ft/lbs.): 359
• Torque Capacity Over OE: 71%
• Disc Material: Ceramic
• Clutch Disc Diameter (Inches): 8.8
• Clutch Disc Diameter (Millimeters): 224
• Input Shaft Diameter (inches): 1
• Pressure Plate Type: Heavy Duty
• Warranty: 12 Months

Description: The ZM4-HDR4 kit by ACT includes their most popular Heavy Duty pressure plate matched with a 4-pad rigid race disc. ACT Heavy Duty pressure plates utilize an exclusive diaphragm design to increase clamp load, diminish deflection, and extend clutch life. Each diaphragm undergoes a four-stage heat-treating process for exceptional performance. Precision cover stampings ensure rigidity and consistency.

ACT's 4-pad rigid race discs are constructed with high-quality ceramic friction materials and a chrome-moly hub heat-treated for strength and durability. The lightweight, rigid design facilitates quicker shifts and smooth, trouble-free service. Although engagement with the 4-pad rigid race disc is harsher, shifting is faster, making it well-suited for smaller disc sizes in smaller engines.

Key Characteristics:

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

Recommended Use: Recommended for race use only, particularly suited for applications where quick, aggressive shifts are necessary.

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

Vehicle Fitment: Compatible with various Mazda MX-5 Miata models from 2006 to 2015, including Grand Touring, Sport, Touring, GT, Special Edition, Club, and GS. All models equipped with the 2.0 L4 GAS FI 2000cc engine.