ACT HD Perf Street Sprung Clutch Kit w/ Monoloc

Universal Fitment

Part #: SB9-HDSS

Overview

The ACT HD Perf Street Sprung Clutch Kit with Monoloc is a high-performance clutch assembly designed for enthusiasts seeking improved durability and engagement in their Subaru WRX, Baja, or Legacy GT from 2002 to 2005 and 2008. This kit combines a heavy-duty pressure plate, a high-friction disc, and a Monoloc adjustable release bearing, providing a reliable upgrade over stock components. It is ideal for drivers who demand a more responsive clutch feel, enhanced holding capacity, and increased longevity for spirited street driving or light track use. Crafted to support aggressive driving styles, this clutch kit helps optimize power transfer and pedal feel while maintaining smooth engagement and reliable operation. Whether you’re upgrading for increased performance or replacing worn components, this clutch kit offers a balanced combination of strength and drivability. It is engineered to support your vehicle’s powertrain with a focus on durability and consistent performance, making it suitable for daily driving, spirited runs, or occasional track days.

Key Features

This clutch kit features advanced materials and a thoughtful design to enhance your driving experience:

• Heavy-duty pressure plate with reinforced diaphragm spring for increased clamping force
• High-friction organic or ceramic composite disc for improved grip and durability
• Sprung hub design to absorb drivetrain shock and reduce driveline vibrations
• Monoloc adjustable release bearing for precise clutch pedal feel and easier installation
• Designed for reliable engagement and smooth operation under demanding conditions
• Compatible with stock or upgraded flywheels for versatile installation
• Built with high-quality materials to withstand aggressive driving and extended use

Construction & Design

The clutch components are manufactured with precision-machined surfaces and high-strength materials to ensure consistent performance and longevity. The pressure plate’s robust construction supports increased clamping force, while the sprung hub design helps dampen vibrations for a smoother feel. The Monoloc release bearing is engineered for easy adjustment and reliable operation, contributing to optimal pedal engagement and longevity.

Driving Feel & Feedback

This clutch kit provides a firm, predictable pedal feel that offers excellent feedback during engagement. The increased clamping force supports confident launches and aggressive shifts, while the sprung hub design helps absorb drivetrain shocks, resulting in a smoother driving experience. It is designed to support spirited street driving with a balance of performance and comfort.

Installation & Fitment

Installation requires proper alignment and may involve removal of the transmission. It is recommended to verify fitment against your vehicle’s specifications and consult professional installation if necessary. The kit is designed as a direct replacement for stock clutch components on compatible Subaru models.

What’s Included

The package includes the heavy-duty pressure plate, high-friction clutch disc, Monoloc adjustable release bearing, and all necessary hardware for installation. Additional components or tools are not included and should be sourced separately if required.