ACT Extreme Race Rigid 4 Pad Clutch Kit 06-26 WRX / 05-12 Legacy GT / 05-09 Outback XT / 06-08 Forester XT / 06 Baja | 681 ft/lbs Torque Capacity | High-Performance Clutch Kit
Overview
The ACT Extreme Race Rigid 4 Pad Clutch Kit is engineered for Subaru enthusiasts demanding aggressive engagement and high torque capacity in motorsport or high-performance street applications. Designed to handle up to 681 ft/lbs of torque, this clutch kit is ideal for WRX, Legacy GT, Outback XT, Forester XT, and Baja models from the mid-2000s to mid-2020s. It delivers a firm pedal feel and quick, precise shifts for drivers who prioritize performance and durability under extreme conditions.
ACT’s design philosophy centers on maximizing clamp load and minimizing deflection through their exclusive diaphragm pressure plate technology. The Xtreme pressure plate undergoes a rigorous four-stage heat treatment process to ensure consistent rigidity and long-lasting performance. The clutch disc features a rigid 4-pad ceramic friction material bonded to a heat-treated chrome-moly hub, providing excellent heat tolerance and strength. This combination results in a clutch system that withstands the rigors of racing while maintaining smooth operation and reliability.
For Subaru owners, this clutch kit offers a significant upgrade over OEM components, with a 121% increase in torque capacity and a lightweight design that reduces rotational mass. While engagement is more aggressive and pedal effort is moderate to heavy, the kit’s precise engineering supports faster shifts and enhanced drivetrain responsiveness. This makes it a preferred choice for track enthusiasts and serious performance builds seeking a clutch that can keep pace with upgraded powertrains.
Features & Specifications
This ACT Extreme Race Rigid 4 Pad Clutch Kit is engineered for Subaru WRX, Legacy GT, Outback XT, Forester XT, and Baja platforms and features a 9.4-inch ceramic friction disc with a rigid 4-pad design. Constructed from high-quality ceramic materials and a heat-treated chrome-moly hub, it delivers exceptional torque capacity and durability for Subaru enthusiasts seeking race-level clutch performance.
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Brand: ACT
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Product: Extreme Race Rigid 4 Pad Clutch Kit
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Part Number: SB12-XTR4
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Fitment: 06-26 WRX / 05-12 Legacy GT / 05-09 Outback XT / 06-08 Forester XT / 06 Baja
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Material: Ceramic friction disc, chrome-moly hub
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Finish: Heat-treated components
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Construction: Precision assembled, dynamically balanced
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Origin: Not specified
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Torque Capacity: 681 ft/lbs
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Torque Capacity Over OE: 121%
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Clutch Disc Diameter: 9.4 inches (240 mm)
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Input Shaft Diameter: 1 inch
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Pressure Plate Type: Xtreme diaphragm design
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Flywheel Type: Prolite lightweight
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Pedal Effort: Moderate to heavy
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Engagement: Aggressive, race-oriented
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Warranty: 12 months
Key Benefits
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Performance: Handles up to 681 ft/lbs torque, supporting high-power Subaru builds
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Durability: Four-stage heat-treated diaphragm and chrome-moly hub ensure long-lasting strength
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Engagement: Aggressive clutch feel for faster, more precise shifts on track or spirited driving
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Fitment: Designed specifically for multiple Subaru platforms, ensuring reliable compatibility
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Quality: Dynamically balanced and precision assembled for smooth operation at high RPM
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Weight Savings: Lightweight Prolite flywheel reduces rotational mass for improved throttle response
What's Included
- 1× ACT Extreme Race Rigid 4 Pad Clutch Kit
- 1× Xtreme diaphragm pressure plate
- 1× Ceramic 4-pad rigid clutch disc with chrome-moly hub
- 1× Prolite lightweight flywheel
- Installation instructions
Installation & Compatibility
Installation of the ACT Extreme Race Rigid 4 Pad Clutch Kit requires moderate mechanical skill and standard clutch service tools. Due to the aggressive engagement and race-oriented design, professional installation is recommended to ensure proper clutch adjustment and to avoid premature wear. This kit is compatible with specified Subaru WRX, Legacy GT, Outback XT, Forester XT, and Baja models; verify exact year and trim fitment before purchase. Tuning is not required for clutch operation, but drivetrain modifications may necessitate adjustments to driving style and maintenance intervals.
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Professional Installation: Recommended
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Modifications Required: None beyond standard clutch replacement procedures
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Verify Compatibility: Confirm fitment for your specific Subaru model and year
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