Clutch Masters 850 Series Race Twin Disc Clutch Kit 06-09 Legacy / 04-21 STI | Twin Disc Design | High-Performance Clutch Kit
Overview
The Clutch Masters 850 Series Race Twin Disc Clutch Kit is engineered for Subaru Legacy (2006-2009) and WRX STI (2004-2021) models requiring a high-performance clutch solution capable of handling elevated horsepower and torque levels. This kit features a robust twin disc setup designed for smaller bell-housing applications, making it ideal for racers and serious enthusiasts who demand consistent engagement and superior clamping force on both street and track.
Built with precision and durability in mind, the 850 Series utilizes billet aluminum covers that are Type 3 hard anodized for enhanced strength and minimal flex. This design approach reduces wasted pedal effort and improves clutch consistency by eliminating cover flex common in cast or stamped units. The kit also incorporates Clutch Masters’ unique Quick Release (QR) system, which smooths engagement and reduces clutch chatter by up to 50%, delivering a refined driving experience without sacrificing race-ready performance.
For Subaru owners pushing the limits of their Legacy or STI, this twin disc clutch kit offers a significant upgrade in clamping force and pedal feel, ensuring that all available engine power is effectively transferred to the drivetrain. The inclusion of a steel flywheel enhances durability and reliability, making this clutch kit a practical choice for high horsepower builds that require both street drivability and track capability.
Features & Specifications
This Clutch Masters 850 Series Race Twin Disc Clutch Kit is engineered specifically for 2006-2009 Subaru Legacy and 2004-2021 WRX STI models and features a twin disc design with a steel flywheel. Constructed from billet aluminum and high-grade steel, it delivers superior clamping force and durability for Subaru enthusiasts seeking race-level performance with manageable pedal effort.
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Brand: Clutch Masters
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Product: 850 Series Race Twin Disc Clutch Kit
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Part Number: 15017-TD8R-SW
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Fitment: 2006-2009 Legacy / 2004-2021 STI
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Material: Billet Aluminum (cover), Steel (flywheel and discs)
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Finish: Type 3 Hard Anodized (cover), Black Oxide (flywheel)
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Construction: CNC Machined Billet Cover, Machined Steel Flywheel
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Origin: Not specified
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Clutch Type: Twin Disc, Pull Type
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Disc Configuration: 1 Sprung Ceramic Disc + 1 Rigid Ceramic Disc (Race TD8R)
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Flywheel Type: Steel Flywheel Included
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Quick Release System: Spring-loaded bolts for smooth engagement and reduced chatter
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Pedal Pressure Increase: Approx. 50% higher clamping force vs. single disc
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Application: High horsepower street and race use
Key Benefits
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Performance: Handles high horsepower and torque with increased clamping force for reliable power transfer.
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Durability: Billet aluminum cover and steel flywheel provide exceptional strength and resistance to flex and wear.
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Engagement: Quick Release system reduces clutch chatter and delivers smooth, consistent pedal feel.
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Fitment: Designed specifically for Subaru Legacy and WRX STI models with smaller bell housings for direct bolt-on installation.
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Driveability: Maintains reasonable pedal pressure despite race-level clamping force, suitable for both street and track.
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Quality: Precision CNC machining and hard anodizing ensure long-lasting performance under demanding conditions.
What's Included
- 1× Clutch Masters 850 Series Race Twin Disc Clutch Kit
- 1× Steel Flywheel
- Mounting hardware included
- Installation instructions
Installation & Compatibility
Installation of the Clutch Masters 850 Series Race Twin Disc Clutch Kit requires moderate to advanced mechanical skills and is best performed by a professional or experienced enthusiast. Special tools such as a clutch alignment tool and torque wrench are recommended. This kit is designed for direct fitment on 2006-2009 Subaru Legacy and 2004-2021 WRX STI models with compatible bell housings. Tuning is recommended after installation to optimize drivetrain performance and ensure smooth engagement.
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Professional Installation: Recommended
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Modifications Required: None for compatible models
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Verify Compatibility: Confirm fitment for your specific year and trim level before purchase
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