Clutch Masters 725 Series Street Twin Disc Clutch Kit 06-17 WRX | Twin Disc Design | High-Performance Clutch Kit
Overview
The Clutch Masters 725 Series Street Twin Disc Clutch Kit is engineered for Subaru WRX models from 2006 to 2014, as well as select Legacy models from 2007 to 2012. This twin disc clutch system is designed to handle high horsepower and torque outputs, making it ideal for enthusiasts who demand reliable and consistent clutch engagement under aggressive driving conditions. While primarily developed for drag racing applications, the Street Twin Disc variant balances performance with occasional street drivability, offering a unique solution for Subaru owners looking to upgrade beyond the limitations of a single disc clutch.
Built with decades of drag racing expertise, the FX725 clutch kit features a billet aluminum cover assembly that is Type 3 hard anodized for exceptional strength and durability. This billet cover reduces flex to a mere .003", compared to the .030" flex seen in cast or stamped covers, resulting in more consistent clutch engagement and improved pedal feel. The inclusion of Clutch Masters’ Quick Release (QR) System further enhances smoothness and reduces clutch noise and chatter by up to 50%, making it a refined choice for street and track use.
For Subaru WRX owners, this clutch kit translates to superior clamping force and minimal rotational mass, which improves throttle response and power transfer. The twin disc setup ensures that all available engine power is effectively transmitted to the drivetrain, supporting both spirited street driving and competitive motorsport scenarios. The kit’s design also includes options for aluminum or steel flywheels, tailored to meet specific performance and durability needs, making it a versatile upgrade for Subaru enthusiasts focused on maximizing drivetrain performance.
Features & Specifications
This Clutch Masters 725 Series Street Twin Disc Clutch Kit is engineered for 2006-2014 Subaru WRX and 2007-2012 Legacy models and features a 7.25" twin disc design with a billet aluminum cover. Constructed from high-strength billet aluminum and premium friction materials, it delivers exceptional clamping force and durability for Subaru enthusiasts seeking a high-performance clutch solution that balances track capability with street usability.
-
Brand: Clutch Masters
-
Product: 725 Series Street Twin Disc Clutch Kit
-
Part Number: 15021-TD7S-A
-
Fitment: 2006-2014 Subaru WRX / 2007-2012 Subaru Legacy
-
Material: Billet Aluminum Cover, Ceramic and Fiber Tuff Friction Discs
-
Finish: Type 3 Hard Anodized (Cover and Aluminum Flywheel)
-
Construction: CNC Machined Billet Cover, Multi-Disc Clutch Assembly
-
Origin: Not Specified
-
Clutch Diameter: 7.25" (184mm)
-
Disc Configuration: 1 Ceramic Rigid Disc + 1 Fiber Tuff Rigid Disc (Street and Race TD7S)
-
Cover Flex: Approximately 0.003" (Billet Cover)
-
Quick Release System: Spring-loaded bolts for smooth engagement and reduced chatter
-
Flywheel Options: Aluminum (6061-T6 billet, SFI 1.2 spec) or Steel (1045 billet, black oxide treated)
-
Application Focus: Drag Racing and Occasional Street Use
Key Benefits
-
Performance: Handles high horsepower and torque with superior clamping force for consistent power transfer.
-
Durability: Billet aluminum cover with hard anodizing reduces flex and increases tensile strength for long-lasting reliability.
-
Driveability: Quick Release System reduces clutch noise and chatter by up to 50%, improving street usability.
-
Fitment: Designed specifically for Subaru WRX and Legacy models with smaller bell housings, ensuring precise compatibility.
-
Weight Savings: Minimal rotational mass improves throttle response and reduces drivetrain inertia.
-
Quality: CNC machined components and premium friction materials provide a race-proven clutch experience.
What's Included
- 1× Clutch Masters 725 Series Street Twin Disc Clutch Kit
- Billet Aluminum Cover Assembly with Quick Release System
- 2× Friction Discs (1 Ceramic Rigid, 1 Fiber Tuff Rigid)
- Flywheel (Aluminum or Steel, depending on selected option)
- Installation instructions
Installation & Compatibility
Installation of the Clutch Masters 725 Series Twin Disc Clutch Kit is moderately complex and generally recommended for experienced DIYers or professional mechanics familiar with Subaru drivetrain systems. The kit requires removal of the transmission and clutch assembly, and may involve flywheel replacement. No special tools beyond standard clutch installation equipment are typically required. Tuning is not necessary for clutch operation, but proper break-in and adjustment are essential for optimal performance and longevity. This clutch kit is specifically designed for 2006-2014 Subaru WRX and 2007-2012 Legacy models with smaller bell housings; verify your vehicle’s year and transmission compatibility before purchase.
-
Professional Installation: Recommended
-
Modifications Required: None beyond standard clutch replacement procedures
-
Verify Compatibility: Confirm fitment for your specific year and trim level
Shop with confidence at Subimods—your Subaru parts specialists.
