Clutch Masters FX100 Single Disc Clutch Kit 18-21 WRX | Increased Holding Capacity | Single Disc Clutch Kit
Overview
The Clutch Masters FX100 Single Disc Clutch Kit is engineered to deliver a significant performance upgrade for Subaru WRX models from 2018 to 2021. Designed for enthusiasts seeking a street-friendly clutch with enhanced holding capacity, this kit offers a perfect balance between daily drivability and track-ready performance. It is ideal for drivers who have added moderate bolt-ons such as exhaust or intake upgrades, or even mild power enhancements up to 50 horsepower, without the need for a twin disc setup.
Built around a billet aluminum clutch cover, the FX100 kit incorporates Clutch Masters’ decades of experience in clutch design, focusing on a shorter, faster, and more precise shift feel. The design retains compatibility with the factory single disc flywheel and hydraulic system, ensuring a smooth transition from stock while providing a noticeably firmer pedal feel and increased clamping force. This approach results in a clutch that is lighter than OEM, more durable, and engineered for consistent performance under both street and light track conditions.
For Subaru owners, this clutch kit means improved engagement and reliability without sacrificing comfort or drivability. The steel-backed organic friction disc offers extended wear and smooth operation, making it a practical upgrade for those who want to maximize their WRX’s potential while maintaining everyday usability. The FX100’s enhanced holding capacity and refined pedal feel translate to confidence-inspiring shifts and durability that matches the demands of Subaru enthusiasts.
Features & Specifications
This Clutch Masters FX100 Single Disc Clutch Kit is engineered for Subaru WRX (2018-2021) and features a billet aluminum clutch cover with a steel-backed organic friction disc. Constructed from high-quality billet aluminum and steel, it delivers increased clamping force and durability for Subaru enthusiasts seeking improved shift precision and holding capacity.
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Brand: Clutch Masters
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Product: FX100 Single Disc Clutch Kit 18-21 WRX
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Part Number: 15915-HD00
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Fitment: 2006 Baja / 2006-2011 Forester / 2005-2009 Legacy
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Material: Billet Aluminum Cover, Steel Backed Organic Friction Disc
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Finish: Natural billet aluminum and steel
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Construction: CNC machined billet cover, precision pressure plate casting
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Origin: Not specified
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Power Gains: Supports up to +50 HP bolt-ons and mild power upgrades
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Tuning Required: No tuning required for typical bolt-ons
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Clutch Type: Single Disc, Street and Light Track Use
Key Benefits
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Performance: 70% increased holding capacity over stock for improved power handling
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Durability: Steel-backed organic friction disc designed for extended wear and smooth engagement
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Fitment: Compatible with factory single disc flywheel and hydraulic system for straightforward installation
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Pedal Feel: Slightly heavier pedal pressure than stock for enhanced driver feedback without fatigue
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Weight Savings: 10% lighter billet aluminum cover reduces rotating mass for quicker throttle response
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Shift Quality: Shorter, faster, and more precise shifts ideal for street and occasional track use
What's Included
- 1× Clutch Masters FX100 Single Disc Clutch Kit
- Power Plus I Heavy-Duty Pressure Plate
- Steel Backed Organic Friction Material Disc
- New Throw Out Bearing designed for short throw clutch
- Pilot Bearing (when applicable)
- Alignment Tool
- Instruction Card
- Decals
Installation & Compatibility
Installation of the Clutch Masters FX100 Single Disc Clutch Kit is moderately complex and generally recommended for those with mechanical experience or professional installation. The kit fits the factory single disc flywheel and works with stock hydraulic systems, although upgrading to Clutch Masters’ internal hydraulic release bearing and master cylinder is recommended for optimal performance. No major modifications are required, but proper break-in and adjustment are essential to maximize clutch life and performance.
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Professional Installation: Recommended
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Modifications Required: None; compatible with factory hydraulics and flywheel
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Verify Compatibility: Confirm fitment for your specific Subaru model and year
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