What is the engagement like with the 4-pad race disc?

The 4-pad spring-centered race disc offers harsher engagement compared to a stock clutch. This design is intended for faster shifting and is well-suited for smaller engines like the one in your Miata.

Does this kit include the necessary hardware for installation?

The manufacturer description does not specify if hardware is included. It is recommended to consult the installation instructions or contact ACT for a detailed parts list.

How does the pressure plate design improve clutch life?

ACT's Heavy Duty pressure plates use an exclusive diaphragm design that increases clamp load and reduces deflection. This ensures consistent pressure on the clutch disc, which helps maximize clutch life under demanding use.

ACT

ACT 1991 Mazda Miata HD/Race Sprung 4 Pad Clutch Kit

Name: ACT 1991 Mazda Miata HD/Race Sprung 4 Pad Clutch Kit
Brand: ACT
Price: 573.85 USD
Availability: InStock

$573.85

ACT ZM2-HDG4 clutch kit for your 1991 Miata. Built for heavy duty and race use with increased clamp load and a faster-shifting race disc.

Key Features

Heavy Duty pressure plate — increases clamp load and clutch life.
4-pad spring-centered race disc — designed for faster shifting and damping vibrations.
Spring retainers — built with wraparound windows and thicker stampings for increased strength.
Precision cover stampings — provide rigidity and consistency for the pressure plate.
Four-stage heat-treated diaphragms — ensure consistent performance.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Fits this vehicle

Mazda Miata 1990-1997, 1999-2005

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Product Details

ZM2-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.