ACT Heavy Duty Race Rigid 4 Pad Clutch Kit 06-26 WRX / 05-12 Legacy GT / 05-09 Outback XT / 06-08 Forester XT / 06 Baja | 574 ft/lbs Torque Capacity | High-Performance Clutch Kit
Overview
The ACT Heavy Duty Race Rigid 4 Pad Clutch Kit is engineered for Subaru performance enthusiasts who demand aggressive engagement and high torque capacity for race applications. Designed specifically for turbocharged Subaru models including the WRX, Legacy GT, Outback XT, Forester XT, and Baja, this clutch kit delivers a significant upgrade over factory components. It is tailored for drivers seeking a clutch that can handle increased power and provide quicker, more precise shifts on the track.
ACT’s design philosophy centers on durability and performance under extreme conditions. The Heavy Duty pressure plate features an exclusive diaphragm design that increases clamp load while reducing deflection, which maximizes clutch life and reliability. The 4-pad rigid race disc uses high-quality ceramic friction materials combined with a heat-treated chrome-moly hub for strength and longevity. This combination ensures consistent engagement and smooth operation even at high RPMs.
For Subaru owners pushing their vehicles beyond stock power levels, this clutch kit offers a substantial torque capacity increase—up to 574 ft/lbs, which is 86% over the original equipment. The rigid 4-pad disc design provides a harsher engagement but allows for faster shifts and improved throttle response, making it ideal for race environments where precision and durability are paramount. This kit is a practical choice for those who prioritize performance and reliability in demanding driving conditions.
Features & Specifications
This ACT Heavy Duty Race Rigid 4 Pad Clutch Kit is engineered for Subaru WRX, Legacy GT, Outback XT, Forester XT, and Baja platforms and features a 574 ft/lbs torque capacity. Constructed from ceramic friction materials and a chrome-moly hub, it delivers aggressive engagement and durability for Subaru enthusiasts seeking race-ready clutch performance.
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Brand: ACT
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Product: Heavy Duty Race Rigid 4 Pad Clutch Kit
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Part Number: SB12-HDR4
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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: Natural metal finish
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Construction: Heat-treated diaphragm pressure plate, rigid 4-pad disc
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Origin: Not specified
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Torque Capacity: 574 ft/lbs
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Torque Capacity Over OE: 86%
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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: Heavy Duty diaphragm
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Flywheel Type: Prolite
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Warranty: 12 Months
Key Benefits
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Performance: Handles up to 574 ft/lbs torque, supporting high-power Subaru builds
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Durability: Heat-treated diaphragm and chrome-moly hub ensure long service life under race conditions
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Engagement: Aggressive, quick engagement ideal for track and race use
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Fitment: Designed specifically for select Subaru turbocharged models for precise compatibility
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Quality: Precision balanced and clamp load tested for smooth high RPM reliability
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Shift Response: Rigid 4-pad disc allows faster, more positive shifts
What's Included
- 1× ACT Heavy Duty Race Rigid 4 Pad Clutch Kit
- Heavy Duty diaphragm pressure plate
- Rigid 4-pad ceramic friction clutch disc
- Prolite flywheel
- Installation instructions
Installation & Compatibility
Installation of the ACT Heavy Duty Race Rigid 4 Pad Clutch Kit is moderately challenging and generally recommended for experienced mechanics or professional installation due to the need for transmission removal and precise alignment. No special tools beyond standard clutch installation equipment are required. This kit is designed for specific Subaru models and years, so verifying exact fitment for your vehicle is essential. Because of the aggressive engagement and race-oriented design, this clutch is recommended for race use only and may require adjustments to driving style. No ECU tuning is required for clutch operation, but supporting modifications may necessitate tuning.
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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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