SKU: XKSU18521-3E | UPC: 9337467307382
XClutch 15-21 Subaru WRX STi Base 2.5L 7.25in Triple Solid Ceramic Clutch Kit
This Stage 5 XClutch kit features a 7.25-inch triple solid ceramic disc design for 2015-2021 Subaru WRX STI Base 2.5L models with 6-speed manual transmissions. It delivers strong torque holding up to 1200 ft-lbs for high horsepower setups while keeping a lightweight build for sharp throttle response. Perfect for track or street performance where power demands exceed stock limits.
Key Features
- Triple Solid Ceramic Discs: 7.25-inch diameter provides high torque capacity and heat resistance for demanding drives
- Includes Flywheel: Stepped flywheel matches OEM specs for direct bolt-on fit and balanced operation
- Release Pilot Bearings: High-quality bearings ensure smooth engagement and long service life
- Bolts and Alignment Tool: Complete hardware kit with pressure plate and flywheel bolts plus tool for precise installation
- Lightweight Design: Reduces rotational mass for quicker revs and better drivability in high power applications
Product Notes
- Designed for vehicles with sequential or high power transmissions check kit contents for your setup
- Break-in period recommended follow manufacturer guidelines for ceramic discs
- Special order item confirm stock before purchase
Installation Notes
- Professional installation recommended.
- Requires transmission removal access to bellhousing
- All necessary bolts and alignment tool provided compatible with OEM flywheel pattern
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2021 | Subaru | WRX STI | Base 2.5L |
Why Choose XClutch?
- Race-proven components trusted in motorsport applications worldwide
- Engineered for precision fit and durability in performance environments
- Direct replacement design maintains stock pedal feel with added capacity
Frequently Asked Questions
- Q: Does this fit 2015-2021 Subaru WRX STI with 2.5L engine?
A: Yes fits all 6-speed manual WRX STI Base 2.5L models from 2015-2021 VA chassis direct bolt-on - Q: What material are the discs made from?
A: Solid ceramic discs offer superior heat dissipation and grip for high torque without glazing - Q: What is the warranty on this clutch kit?
A: 12-month warranty against defects when installed by certified technician proper break-in required
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed 18 x 14 x 10 inches
- Weight: 42 lbs





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