ACT 4 Pad Sprung Race Clutch Disc 06-26 WRX / 04-21 STI / 05-12 Legacy GT / 05-09 Outback XT / 06-08 Forester XT / 06 Baja | Ceramic Friction | Race Clutch Disc
Overview
The ACT 4 Pad Sprung Race Clutch Disc is a high-performance clutch component designed specifically for Subaru models including the WRX, WRX STI, Legacy GT, Outback XT, Forester XT, and Baja. Engineered for race use, this clutch disc features ceramic friction material and a sprung hub design that delivers aggressive engagement and quicker shifts. It is ideal for enthusiasts seeking a durable, high-torque capacity clutch solution that can handle the rigors of track and spirited driving.
ACT’s design philosophy centers on strength, reliability, and performance. This race disc incorporates premium ceramic friction pads arranged in a 4-pad layout, combined with heavy-duty torsional dampening springs that are stronger than standard springs. The heat-treated spring steel drive plate and wraparound spring windows improve structural integrity and reduce stress concentrations, ensuring the clutch withstands high power outputs and aggressive driving conditions.
For Subaru owners, this clutch disc offers a significant upgrade in torque capacity and engagement feel compared to OEM or organic clutch discs. The ceramic material provides excellent heat tolerance and moderate wear rates, making it suitable for race environments where quick, precise shifts and durability under high load are critical. While the engagement is harsher than stock, it translates to improved throttle response and faster gear changes, enhancing the driving experience on both the street and track.
Features & Specifications
This ACT 4 Pad Sprung Race Clutch Disc is engineered for Subaru performance platforms including WRX, STI, Legacy GT, Outback XT, Forester XT, and Baja models. It features a 9.4-inch diameter ceramic friction disc with heavy-duty torsional springs and a heat-treated spring steel drive plate, delivering high torque capacity and aggressive engagement for race-focused applications.
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Brand: ACT
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Product: 4 Pad Sprung Race Clutch Disc
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Part Number: 4240518
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Fitment: 06-26 WRX / 04-21 STI / 05-12 Legacy GT / 05-09 Outback XT / 06-08 Forester XT / 06 Baja
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Material: Ceramic friction pads, spring steel drive plate
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Finish: Heat-treated steel
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Construction: Wraparound spring windows, thicker retainer stampings, heat-treated spring steel plate
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Origin: Not specified
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Disc Diameter: 9.4 inches (240 mm)
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Product Weight: 3.4 lbs
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Engagement: Aggressive, race-oriented
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Warranty: 12 months
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SFI Rating: 1.1
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Torque Capacity: Holds 28% more torque than typical organic materials
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Recommended Use: Race use only
Key Benefits
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Performance: Aggressive engagement and quicker shifts improve throttle response and track performance.
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Durability: Premium ceramic friction material offers high heat tolerance and moderate wear rates under demanding conditions.
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Strength: Heat-treated spring steel drive plate and heavy-duty torsional springs increase torque capacity and reliability.
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Fitment: Designed specifically for a broad range of Subaru turbocharged models ensuring precise compatibility.
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Quality: Wraparound spring windows and thicker retainer stampings reduce stress concentrations for longer service life.
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Race-Ready: SFI 1.1 certification and 12-month warranty provide confidence for competitive use.
What's Included
- 1× ACT 4 Pad Sprung Race Clutch Disc
- Installation instructions
Installation & Compatibility
Installation of the ACT 4 Pad Sprung Race Clutch Disc is recommended for experienced mechanics or professional shops due to the precision required for clutch alignment and potential need for transmission removal. No special tools beyond standard clutch installation equipment are typically required. This clutch disc is designed for race use and aggressive driving; therefore, it may produce harsher engagement and gear rattle compared to OEM units. It is important to verify compatibility with your specific Subaru model year and trim before purchase. Tuning or adjustments to driving style may be necessary to accommodate the more aggressive engagement characteristics.
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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 year and trim level
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