ACT Clutch Kits

Universal Fitment

Part #: T1S-S07

Overview

The ACT HD Twin Organic Street Clutch Kit for Subaru WRX STI (04-21) is a high-performance clutch solution designed for enthusiasts seeking improved durability and heat capacity. This twin disc clutch kit features a Rigid Hub with Organic Discs, providing a balance of street-friendly engagement and long-lasting performance. Ideal for daily drivers, spirited street use, and light track days, this clutch enhances your vehicle’s response and reliability under demanding conditions. Its design supports smoother engagement and increased holding capacity, making it suitable for modified or heavily driven Subaru WRX STI models.

Key Features

This clutch kit incorporates advanced materials and innovative design features to optimize performance and longevity:

• Dual disc surfaces for increased wear resistance and heat dissipation
• Proprietary Positive Lift Floater System for quiet operation and rattle-free performance
• Four-stage heat-treating process on diaphragms for enhanced strength and durability
• Organic friction material for smooth engagement and consistent pedal feel
• Rigid hub design to improve response and reduce flex under load
• Engineered for reliable street performance with light to moderate modifications

Construction & Design

The clutch features a robust twin disc setup with a proprietary floater system that eliminates floater rattle and minimizes posts wear. The materials are carefully selected and heat-treated to withstand high temperatures, ensuring consistent performance over time. The organic friction discs are designed to provide a smooth, progressive engagement, reducing pedal effort and enhancing drivability.

Driving Feel & Feedback

This clutch kit offers a firm yet smooth engagement, supporting confident driving and responsive throttle response. The design reduces chatter and slip, providing a predictable pedal feel that helps you maintain control during aggressive driving or daily commuting.

Installation & Fitment

Installation should be performed by a qualified technician familiar with Subaru WRX STI models. Proper setup ensures optimal performance and longevity. Fitment details should be verified against the vehicle’s specifications and the part number provided.

What’s Included

The kit includes all necessary clutch discs, pressure plate, floater system components, and hardware required for installation, ensuring a complete upgrade for your vehicle’s clutch system.