Clutch Masters FX100 Single Disc Clutch Kit 06-09 Legacy / 04-21 STI | 70% Increased Holding Capacity | Heavy-Duty Clutch Kit
Overview
The Clutch Masters FX100 Single Disc Clutch Kit is designed specifically for Subaru enthusiasts driving 2006-2009 Legacy and 2004-2021 WRX STI models who require a reliable upgrade for street use. This clutch kit provides a significant increase in holding capacity—up to 70% more than stock—making it ideal for vehicles with minor bolt-ons such as exhausts, intakes, or mild power adders like up to 50 horsepower from nitrous oxide or other non-forced induction modifications. It balances enhanced clamping force with a smooth, OEM-like pedal feel, ensuring daily drivability without harsh engagement.
Engineered with a Power Plus I Heavy-Duty Pressure Plate and a steel-backed organic friction material disc, the FX100 system focuses on durability and consistent performance. The use of a marcel spring wafer and OEM or better release and pilot bearings reflects Clutch Masters’ commitment to quality and longevity. This kit is built to withstand extended wear while maintaining smooth engagement and disengagement, making it a practical choice for Subaru owners who want a dependable clutch upgrade without sacrificing comfort.
For Subaru drivers, this clutch kit offers a real-world solution that supports moderate performance enhancements while maintaining reliability. The slightly increased pedal pressure over factory settings ensures better control and responsiveness, which is crucial for spirited driving on WRX STI and Legacy models. Whether you’re upgrading your bolt-ons or preparing for light power modifications, the FX100 clutch kit delivers a durable and street-friendly clutch experience tailored to Subaru’s unique drivetrain characteristics.
Features & Specifications
This Clutch Masters FX100 Single Disc Clutch Kit is engineered for 2006-2009 Legacy and 2004-2021 WRX STI platforms and features a steel-backed organic friction disc with a heavy-duty pressure plate. Constructed from high-quality materials, it delivers increased holding capacity and smooth engagement for Subaru enthusiasts seeking enhanced durability and street performance.
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Brand: Clutch Masters
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Product: FX100 Single Disc Clutch Kit 06-09 Legacy / 04-21 STI
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Part Number: 15017-HD00
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Fitment: 2006-2009 Subaru Legacy, 2004-2021 Subaru WRX STI
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Material: Steel-backed organic friction disc
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Finish: Natural metal finish
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Construction: Heavy-duty pressure plate with marcel spring wafer
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Origin: Not specified
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Torque Capacity Increase: Approximately 70% over stock
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Pedal Pressure: Slightly increased over factory
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Clutch Type: Single disc, organic friction material
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Included Components: Release bearing, pilot bearing (when applicable), alignment tool
Key Benefits
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Performance: Supports up to 50 horsepower of bolt-on upgrades and mild nitrous applications with increased clamping force
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Durability: Steel-backed organic disc and heavy-duty pressure plate extend clutch life beyond OEM standards
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Engagement: Maintains smooth, OEM-like pedal feel for comfortable daily driving
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Fitment: Designed specifically for Subaru Legacy (06-09) and WRX STI (04-21) for precise compatibility
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Quality: Includes OEM or better release and pilot bearings to ensure reliable operation
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Value: Balanced upgrade for enthusiasts wanting improved holding capacity without harsh engagement
What's Included
- 1× Clutch Masters FX100 Single Disc Clutch Kit
- 1× Power Plus I Heavy-Duty Pressure Plate
- 1× Steel-backed organic friction material disc
- 1× Marcel spring wafer
- 1× OEM or better release bearing
- 1× Pilot bearing (when applicable)
- 1× Alignment tool
- 1× Instruction card
- Decals
Installation & Compatibility
Installation of the Clutch Masters FX100 kit is moderately complex and generally recommended for those with mechanical experience or professional installation. Proper alignment and break-in procedures are critical to maximize clutch life and performance. No major modifications are required for fitment on compatible Legacy and WRX STI models, but verify your specific year and trim to ensure compatibility. Tuning is not required for this clutch upgrade, but it is designed for vehicles with minor bolt-ons and moderate power increases.
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Professional Installation: Recommended
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your specific year and trim level
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