Clutch Masters 850 Strapped Series Twin Disc Clutch Kit 06-09 Legacy / 04-21 STI | Smooth Engagement | High-Performance Twin Disc Clutch Kit
Overview
The Clutch Masters 850 Strapped Series Twin Disc Clutch Kit is a high-performance upgrade designed for Subaru Legacy models from 2006 to 2009 and Subaru WRX STI models from 2004 to 2021. This twin disc clutch kit bridges the gap between street-friendly drivability and track-capable performance, making it ideal for enthusiasts who demand both daily usability and aggressive power handling. It is engineered to handle high horsepower applications while maintaining smooth engagement and manageable pedal effort.
Developed with a focus on durability and driver comfort, the 850 Strapped kit utilizes drive straps to isolate the pressure plate and mid-plate between the two ceramic discs. This design virtually eliminates clutch chatter, a common issue with traditional twin disc setups, resulting in a smoother and more consistent engagement. The billet aluminum cover is Type 3 hard anodized and machined for superior strength and minimal flex, ensuring that all clutch actuation force is efficiently applied without loss through cover deformation.
For Subaru owners, this clutch kit offers a significant upgrade in clamping force and reliability, allowing the engine’s power to be fully transferred to the drivetrain without slipping. Whether you’re pushing your Legacy or WRX STI on the street or the track, the 850 Strapped Series provides a balanced solution that enhances driving confidence and performance longevity.
Features & Specifications
This Clutch Masters 850 Strapped Series Twin Disc Clutch Kit is engineered specifically for Subaru Legacy (06-09) and WRX STI (04-21) platforms and features a dual ceramic disc setup with a billet aluminum cover. Constructed from high-strength billet aluminum and premium ceramic materials, it delivers smooth engagement and superior clamping force for Subaru enthusiasts seeking a durable, streetable twin disc clutch solution.
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Brand: Clutch Masters
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Product: 850 Strapped Series Twin Disc Clutch Kit
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Part Number: 15017-TDFS-SHV
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Fitment: 2006-2009 Subaru Legacy / 2004-2021 Subaru WRX STI
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Material: Billet Aluminum Cover, Ceramic Clutch Discs
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Finish: Type 3 Hard Anodized (Cover)
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Construction: CNC Machined Billet Cover, Sprung and Rigid Ceramic Discs
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Origin: Made in USA
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Clutch Type: Twin Disc with Drive Strap Isolation
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Pedal Effort: Manageable for Street and Track Use
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Flywheel Compatibility: Requires Clutch Masters Flywheel FW-029-B-TDS (Aluminum or Steel Options)
Key Benefits
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Performance: Handles high horsepower and torque without slipping, maximizing power transfer.
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Durability: Billet aluminum cover with 25% more tensile strength reduces flex and increases clutch life.
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Driveability: Drive strap isolation virtually eliminates chatter for smooth, street-friendly engagement.
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Fitment: Designed specifically for Subaru Legacy and WRX STI models ensuring precise compatibility.
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Quality: Premium ceramic discs and anodized billet cover provide consistent performance under demanding conditions.
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Adjustability: Sprung and rigid disc combination balances shock absorption and direct power transfer.
What's Included
- 1× Clutch Masters 850 Strapped Series Twin Disc Clutch Kit
- Pressure plate with drive strap isolation
- One sprung ceramic disc and one rigid ceramic disc
- Installation instructions
Installation & Compatibility
Installation of the Clutch Masters 850 Strapped Series Twin Disc Clutch Kit is moderately complex and generally recommended for experienced DIYers or professional mechanics due to the precision required for clutch alignment and flywheel compatibility. The kit requires the use of a compatible Clutch Masters flywheel (FW-029-B-TDS), available in aluminum or steel, which must be installed alongside the clutch. No special tools beyond standard clutch installation equipment are necessary, but proper torque specifications and alignment tools are essential for optimal performance.
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Professional Installation: Recommended
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Modifications Required: None beyond flywheel replacement
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Verify Compatibility: Confirm fitment for your specific year and trim level of Subaru Legacy or WRX STI
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