ZM12-HDG4 - HD/Race Sprung 4 Pad

Product Description: HD/Race Sprung 4 Pad Clutch Kit

The HD/Race Sprung 4 Pad Clutch Kit, designated as the ZM12-HDG4, is engineered by ACT to deliver exceptional performance under the most demanding conditions. Weighing 26.8 pounds, this kit exhibits a remarkable torque capacity of 399 ft/lbs, surpassing OE standards by an impressive 87%. Crafted with a ceramic disc material, it features a clutch disc diameter of 8.8 inches (224mm) and an input shaft diameter of 0.9375 inches.

At the heart of this kit lies ACT's renowned Heavy Duty pressure plate, renowned for its exclusive diaphragm design. This design elevates clamp load, minimizes deflection, and extends clutch lifespan. Each diaphragm undergoes a rigorous four-stage heat-treating process, ensuring unparalleled performance and longevity. Precision cover stampings provide essential rigidity and consistency for enduring performance under extreme conditions.

The clutch kit integrates ACT's 4-pad spring-centered race disc, engineered with premium ceramic friction materials. Featuring a spring-center, this design effectively dampens torsional vibrations, ensuring quieter operation and enhanced resistance to failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings, offering superior spring support, reduced stress concentrations, and increased strength and reliability. While engagement may be firmer with the 4-pad spring-centered race disc, shifting becomes notably faster. This configuration is particularly well-suited for smaller disc sizes in smaller engines.

Key Features:

• 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, utilizing select ceramic friction materials for high heat tolerance and maximum performance.
• Recommended Use: Ideal for high horsepower street or race use, offering exceptional performance in demanding applications.
• ACT Difference: Rigorously tested, ensuring 100% clamp load and dynamically computer balanced for smooth operation even at high RPMs.

Vehicle Fitment: This clutch kit is compatible with a range of Mazda MX-5 Miata models from 2016 to 2018, including various trim levels equipped with a 2.0 L4 GAS FI 1998cc engine. Compatible models include:

• 2016-2018: Mazda MX-5 Miata Club, GS, GT, GX, Grand Touring, Sport
• 2017-2018: Mazda MX-5 Miata RF Club, RF GS, RF GT, RF Grand Touring

Owners of these Mazda MX-5 Miata models seeking uncompromising performance can elevate their driving experience with the HD/Race Sprung 4 Pad Clutch Kit from ACT.