Action Clutch Stage 4 Clutch Kit

1990–1993 Mazda MX-5 Miata 1.6L DOHC (B6)

Part #: ACR-0866

Overview

The Action Clutch Stage 4 Metallic Rigid Clutch Kit is designed to deliver exceptional performance for Mazda MX-5 Miata owners seeking increased holding capacity and aggressive engagement. Built specifically for the 1990–1993 models equipped with the 1.6L DOHC B6 engine, this clutch kit is ideal for enthusiasts who push their vehicles hard on the street or track. Whether you're upgrading for spirited driving, autocross, or light racing, this clutch provides the durability and responsiveness needed to support your performance goals.

With its robust construction and advanced materials, the Stage 4 clutch ensures reliable power transfer, rapid heat dissipation, and a firm pedal feel. You'll experience a slight increase in pedal pressure compared to stock, but in return, you'll get a clutch that engages quickly and holds significantly more torque, making it suitable for modified engines or high-stress driving conditions. This kit is engineered to help you achieve confident, aggressive shifts with outstanding durability and heat resistance.

Key Features

The Action Clutch Stage 4 Clutch Kit incorporates several innovative features designed to optimize performance and longevity:

• Single Diaphragm Heavy-Duty Pressure Plate: Provides a strong clamping force to handle increased power and torque, ensuring consistent engagement under demanding conditions.
• Rigid Ceramic Clutch System: Utilizes high-quality ceramic friction material for rapid heat dissipation and excellent holding capacity, reducing the risk of slip during aggressive driving.
• Lightweight Unsprung Hub: The unsprung hub design minimizes rotational mass, resulting in quicker throttle response and smoother engagement.
• Reinforced Drive Straps: Enhance durability and prevent deformation under high loads, extending the lifespan of the clutch assembly.
• 170% Increase in Holding Capacity: Significantly improves the clutch's ability to support high horsepower and torque levels, ideal for modified engines or spirited driving.
• Pedal Feel: Maintains a light pedal pressure for comfortable daily driving while delivering aggressive engagement when needed.

Construction & Design

This clutch kit features a heavy-duty pressure plate constructed from high-strength materials to withstand the rigors of high-performance driving. The ceramic friction disc is engineered for rapid heat dissipation and consistent torque transfer, ensuring reliable operation even during extended spirited sessions. The use of reinforced drive straps and a lightweight hub design reduces rotational inertia, resulting in improved throttle response and quicker acceleration. The entire assembly is precision-engineered to fit seamlessly into your Mazda MX-5 Miata's factory clutch housing, ensuring a straightforward installation process without modifications.

Installation & Fitment

This clutch kit is a bolt-on upgrade that requires no cutting or drilling. It is designed to fit directly into your Mazda MX-5 Miata 1.6L DOHC (B6) engine from 1990 to 1993. Basic mechanical skills and standard tools are sufficient for installation. Due to the increased clamping force and aggressive engagement characteristics, some drivers may notice a slightly different pedal feel, but no additional tuning or adjustments are typically necessary. Always follow the included instructions for proper installation and break-in procedures to ensure optimal performance and longevity.

• Complete clutch assembly with pressure plate, ceramic friction disc, and release bearing
• All necessary hardware and instructions included

Ideal For

• Performance enthusiasts seeking increased holding capacity and aggressive engagement
• Owners of Mazda MX-5 Miata 1.6L DOHC models from 1990–1993
• Drivers who modify their engine for higher horsepower and torque levels
• Track day and autocross participants requiring reliable, high-performance clutch components