ACT Heavy Duty Performance Street Sprung Clutch Kit

Fits 2016–2025 Subaru WRX (Excluding STI) Models

Part #: SB12-HDSS

Overview

The ACT Heavy Duty Performance Street Sprung Clutch Kit is designed to enhance the driving experience of Subaru WRX owners seeking improved durability and performance for daily driving and spirited street use. This kit combines ACT’s most popular heavy-duty pressure plate with a high-quality street disc, providing a reliable upgrade that supports aggressive driving styles while maintaining smooth engagement and pedal feel. Crafted for enthusiasts who demand longevity and consistent performance, this clutch kit is ideal for those looking to handle increased power levels or replace worn components without sacrificing drivability. Whether you’re upgrading for better response or replacing a worn clutch, this kit offers a balanced blend of strength and streetability. It helps ensure your vehicle maintains optimal clutch engagement, reduces slip under load, and extends the lifespan of your clutch system, making it a smart choice for daily drivers and weekend warriors alike.

Key Features

This clutch kit features premium materials and innovative design elements to deliver reliable performance and durability:

• Heavy-duty diaphragm pressure plate with increased clamp load for improved holding capacity
• Exclusive diaphragm design reduces deflection and enhances pedal feel
• Four-stage heat-treating process on diaphragms for maximum strength and heat resistance
• Precision cover stampings provide rigidity and consistency during engagement
• Performance street organic disc with high copper content for excellent friction and wear characteristics
• Optimized for street driving, offering smooth engagement and reliable power transfer
• Designed to support increased horsepower and torque levels

Construction & Design

The clutch components are engineered with high-quality organic friction materials infused with copper, ensuring excellent heat dissipation and longevity. The pressure plate’s diaphragm is crafted from durable steel with a heat-treating process that enhances its structural integrity, while the precision stampings ensure consistent pressure application. The overall design emphasizes strength, reliability, and smooth operation, making it suitable for daily use and moderate performance upgrades.

Driving Feel & Feedback

This clutch kit provides a firm yet manageable pedal feel, offering confident engagement without excessive pedal effort. It supports smooth power transfer and reduces clutch slip, contributing to a more responsive driving experience. The design helps maintain a natural driving feel, making it suitable for everyday commuting and spirited driving alike.

Installation & Fitment

Installation requires standard clutch replacement procedures and is best performed by a qualified technician. 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 and the performance street organic disc, along with all necessary hardware for installation. Additional components or hardware are not included but are typically part of a standard clutch replacement process.

Ideal For

This clutch kit is ideal for Subaru WRX owners who want a durable, high-performance upgrade that enhances street driving and supports increased power levels. It’s suitable for daily drivers, enthusiasts, and those seeking a reliable clutch solution for moderate performance modifications.