ACT Heavy Duty Race Sprung 4 Pad Clutch Kit

Fitment: Mazda Miata (90-93)

Part #: ZM1-HDG4

Overview

The ACT Heavy Duty Race Sprung 4 Pad Clutch Kit is designed to deliver enhanced durability and reliable performance for Mazda Miata owners seeking a high-performance clutch solution. This kit is ideal for drivers who demand increased clamp load and improved heat resistance during spirited driving or track use. Crafted with precision and engineered for longevity, the ACT HD/Race Sprung 4 Pad Kit helps ensure smooth engagement, consistent power transfer, and extended clutch life, making it a popular choice among enthusiasts and racers alike. Whether you’re upgrading for increased performance or replacing a worn clutch, this kit provides a robust and dependable upgrade that supports your vehicle’s powertrain needs. Its design emphasizes durability, heat management, and consistent engagement, helping you maintain optimal driving feel and response under demanding conditions.

Key Features

This clutch kit features advanced materials and engineering to support high-performance driving:

• Heavy Duty pressure plate with exclusive diaphragm design for increased clamp load
• Four-stage heat-treated race disc for superior heat resistance and durability
• Spring-centered design to damp torsional vibrations and improve drivability
• Precision cover stampings for rigidity and consistent performance
• Sprung hub to help reduce driveline shock and enhance smooth engagement
• Designed to withstand high torque loads and aggressive driving conditions

Construction & Design

The ACT HD/G4 clutch kit features a robust pressure plate constructed from high-strength materials, with a focus on heat treatment and structural integrity. The sprung race disc incorporates a spring-centered hub that helps dampen torsional vibrations, contributing to smoother operation and reduced stress on drivetrain components. The precision stamping of the cover ensures consistent pressure distribution and reliable engagement, making this kit suitable for demanding driving environments.

Driving Feel & Feedback

This clutch kit provides a firm and predictable engagement, supporting confident shifting and power transfer. The sprung disc design helps dampen vibrations, resulting in smoother operation and improved driver feedback during aggressive driving or track sessions. It is engineered to handle increased torque loads while maintaining a manageable pedal feel, making it suitable for both spirited street driving and competitive racing.

Installation & Fitment

Installation requires standard clutch replacement procedures. Proper alignment and torque specifications should be followed to ensure optimal performance. Fitment should be verified against the vehicle’s specifications and the part number provided.

What’s Included

The package includes the heavy-duty pressure plate, sprung race disc, release bearing, and necessary hardware for installation. Additional components or tools are not included and should be sourced separately if needed.