ACT Clutch Kit

Fits 2006–2025 Subaru WRX

Part #: SB12-HDG4

Overview

The ACT 06-25 Subaru WRX HD/Race Sprung 4 Pad Clutch Kit is designed for enthusiasts seeking enhanced durability and performance in their vehicle's clutch system. This comprehensive kit includes ACT's most popular Heavy Duty pressure plate paired with a high-performance race disc, making it ideal for spirited driving, track days, or demanding street use. Crafted for drivers who demand reliability and consistent engagement, this clutch kit helps improve power transfer and pedal feel while supporting the vehicle’s performance upgrades. Whether you're upgrading for increased horsepower, improved response, or enhanced longevity, this clutch kit offers a balanced combination of strength and smooth operation. It is suitable for those who want a reliable, high-quality clutch solution that can withstand aggressive driving conditions without sacrificing daily drivability.

Key Features

This clutch kit features a robust design focused on durability and performance. The components are engineered with high-quality materials to ensure long-lasting operation and consistent engagement. The kit includes a spring-centered race disc that helps damp torsional vibrations, resulting in quieter operation and smoother power delivery. The pressure plate employs an exclusive diaphragm design that increases clamp load, reduces deflection, and maximizes clutch life, even under high-stress conditions. Precision cover stampings provide added rigidity and stability, ensuring reliable performance over time.

• Heavy Duty pressure plate with increased clamp load
• 4-pad spring-centered race disc for vibration damping
• Heat-treated diaphragm for durability and performance
• Precision cover stampings for rigidity and consistency
• Designed for high-performance street and race applications
• Supports increased power and torque handling
• Engineered for long-lasting operation and reliability

Construction & Design

The clutch components are constructed from high-strength steels and friction materials designed to withstand high temperatures and aggressive driving. The diaphragm pressure plate features a heat-treating process that enhances its resilience, while the race disc’s spring-center dampens torsional vibrations for quieter, smoother operation. The overall design emphasizes durability, consistent engagement, and ease of installation.

Driving Feel & Feedback

This clutch kit provides a firm, predictable pedal feel with improved response, making it suitable for both daily driving and performance applications. The dampening characteristics of the race disc help reduce driveline vibrations, contributing to a more refined driving experience. Drivers will notice enhanced power transfer and a more confident engagement during spirited driving or track use.

Installation & Fitment

Installation requires standard clutch replacement procedures and is recommended to be performed by qualified technicians. Proper alignment and torque specifications should be followed to ensure optimal performance and longevity.

What’s Included

The kit includes the heavy-duty pressure plate, a spring-centered race disc, release bearings, and all necessary hardware for installation.