ACT Heavy Duty Race Sprung 4-Pad Clutch Kit w/ Flywheel | 2019-2025 Mazda MX-5 Miata (ZM14-HDG4)

Heavy Duty Race Clutch Kit w/ 4-Pad Sprung Disc by ACT

ZM14-HDG4 kit features ACT's most popular Heavy Duty pressure plate. 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 4-pad spring-centered race disc 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. ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.

Please Note: Must be used with ACT flywheel (included in kit). Pressure plate bolts included (M8-1.25 x 20mm).

Features

• Torque Capacity (ft/lbs.):  399
• Torque Capacity Over OE: 87%
• Disc Material: Ceramic
• Clutch Disc Diameter (Inches):  8.8
• Clutch Disc Diameter (Millimeters):  224
• Input Shaft Diameter (inches): 0.9375
• Pressure Plate Type: Heavy Duty

Benefits

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

Applications

• 2019 - 2025 Mazda MX-5 Miata

What's in the box?

• 1 x 601330 - ACT XACT Streetlite Clutch Flywheel
• 1 x MZ033 - ACT Heavy Duty Clutch Pressure Plate
• 1 x 4224505-1 - ACT 4-Pad Sprung Clutch Disc
• 1 x AT05 - ACT Clutch Alignment Tool
• 1 x RB110 - ACT Clutch Release Bearing
• 1 x PB1030 - ACT Clutch Pilot Bearing

Warranty

• ACT warrants all products to be free of defects in materials and workmanship for normal use and service for a period of one (1) year from retail purchase