ACT Extreme Duty Performance Street Sprung Disc Clutch Kit

Fitment: Subaru STI (04-21)

Part #: SB10-XTSS

Overview

The ACT Extreme Duty Performance Street Disc Clutch Kit is designed for high-performance street driving and demanding applications on Subaru WRX STI models from 2004 to 2021. This kit features an Xtreme pressure plate engineered to deliver exceptional clamping force, durability, and reliability under aggressive driving conditions. It is ideal for enthusiasts seeking a clutch solution that combines street usability with the robustness required for spirited driving, track days, or increased power levels. The kit helps improve response, pedal feel, and overall drivability while supporting the vehicle’s performance potential. Constructed with high-quality materials and precision manufacturing, this clutch kit ensures consistent engagement and long-lasting performance. The components are designed to withstand high heat and stress, making it suitable for drivers who demand more from their vehicle without sacrificing daily usability.

Key Features

This clutch kit offers a combination of advanced engineering and durable materials to enhance your driving experience:

• High-strength Xtreme pressure plate with exclusive diaphragm design
• Increased clamp load for improved holding capacity
• Four-stage heat-treating process for maximum durability
• Precision cover stampings for rigidity and consistency
• Performance street discs engineered for reliable engagement
• Designed to support increased power and spirited driving
• Optimized for street use with excellent pedal feel and response

Construction & Design

The clutch components are crafted from high-quality steels and friction materials, ensuring resistance to heat and wear. The diaphragm pressure plate features a robust design that maintains consistent pressure across the clutch surface, reducing deflection and enhancing longevity. The heat-treating process further reinforces the durability of each part, making this kit suitable for demanding driving conditions.

Driving Feel & Feedback

This clutch kit provides a firm, responsive pedal feel that offers precise engagement and control. It supports aggressive driving styles while maintaining smooth operation during daily use. Drivers will notice improved response and a more confident driving experience, especially during high-load situations.

Installation & Fitment

Installation should be performed by qualified technicians familiar with Subaru STI models. Proper setup ensures optimal performance and longevity. Fitment verification against the vehicle’s specifications and the part number is recommended prior to installation.

What’s Included

The kit includes all necessary components for a complete clutch replacement, including the pressure plate, clutch disc, release bearing, and hardware required for installation.

Ideal For

Perfect for Subaru STI owners seeking a durable, high-performance clutch solution capable of handling spirited driving, increased power, and daily street use.