XClutch Stage 2 Cushioned Ceramic Clutch Kit - 2015-2021 Subaru WRX STi 2.5L
XClutch Stage 2 Cushioned Ceramic Clutch Kit - 2015-2021 Subaru WRX STi 2.5L
Maximize your modified WRX STi's performance with the XClutch Stage 2 cushioned ceramic clutch kit. Engineered specifically for the 2015-2021 Subaru WRX STi, this clutch delivers exceptional torque capacity for heavily modified engines while the cushioned ceramic design maintains surprisingly smooth engagement for street use. Perfect for big turbo builds and serious performance applications.
Key Features:
- Stage 2 performance upgrade - ideal for heavily modified engines
- Cushioned ceramic friction material for improved drivability
- Supports 450+ HP and 450+ lb-ft torque on the EJ257 platform
- Increased clamping force for maximum torque capacity
- Advanced pressure plate design for positive engagement
- Includes pressure plate, clutch disc, and release bearing
- Direct replacement for factory clutch
- XClutch quality engineering with 30+ years of experience
Performance Benefits:
- High Torque Capacity: Supports 450+ HP for big turbo and heavily modified builds
- Improved Drivability: Cushioned ceramic design provides smoother engagement than traditional ceramic
- Positive Engagement: Advanced pressure plate delivers firm, consistent pedal feel
- Heat Resistant: Ceramic material withstands extreme temperatures without fade
- Track-Ready: Handles sustained high-load conditions and aggressive driving
- Long Service Life: Ceramic material offers extended clutch life under high stress
Specifications:
- Brand: XClutch
- Part Number: XKSU24001-1C
- Stage: Stage 2 (high performance)
- Disc Type: Cushioned ceramic
- Friction Material: Ceramic with cushioning segments
- Torque Capacity: 450+ HP / 450+ lb-ft
- Weight: 20.9 lbs (complete kit)
- Barcode: XKSU24001-1C
Fitment Information:
- Compatible Vehicles:
- 2015-2021 Subaru WRX STi (EJ257)
- 2018-2021 Subaru WRX STi Type RA (EJ257)
- Note: Designed specifically for 2015+ WRX STi with 2.5L EJ257 engine
What's Included:
- XClutch Stage 2 pressure plate
- Cushioned ceramic clutch disc
- Release bearing (throw-out bearing)
- Alignment tool
- Installation instructions
Installation Notes:
- Professional installation strongly recommended
- Transmission removal required for installation
- Installation time: approximately 6-8 hours
- Flywheel should be resurfaced or replaced during installation
- Use new flywheel bolts (not included - use OEM or ARP)
- Torque all fasteners to Subaru specifications
- Break-in period: 500-1,000 miles of moderate driving required
Stage 2 Performance Level:
XClutch Stage 2 clutches are designed for heavily modified vehicles with significant power increases. This stage offers substantially higher torque capacity than Stage 1, making it ideal for WRX STi builds with big turbo upgrades, upgraded fueling, and aggressive tuning. Stage 2 is the recommended choice for builds targeting 400+ HP where Stage 1 clutches would be inadequate.
Cushioned Ceramic Technology:
Traditional ceramic clutches are known for harsh, grabby engagement that can be challenging for street use. XClutch's cushioned ceramic design incorporates cushioning segments that allow for more progressive engagement, significantly improving drivability compared to standard ceramic clutches. This makes the Stage 2 clutch surprisingly street-friendly while still delivering the high torque capacity needed for big power builds.
Ceramic vs. Organic Material:
Ceramic friction material offers several advantages over organic material for high-performance applications. Ceramic can handle significantly higher torque loads, withstands extreme temperatures without fade, and provides longer service life under high-stress conditions. While ceramic clutches traditionally have harsher engagement, XClutch's cushioned design bridges the gap between performance and drivability.
Why XClutch?
XClutch is an Australian engineering company with over 30 years of clutch development experience. Their Stage 2 clutches are designed using advanced pressure plate geometry and premium ceramic friction materials to deliver exceptional torque capacity while maintaining the best possible drivability. With one of the world's most advanced clutch testing facilities and extensive in-house vehicle testing, XClutch delivers proven performance and reliability.
Break-In Procedure:
Proper break-in is critical for ceramic clutch longevity and performance. For the first 500-1,000 miles, avoid aggressive launches, heavy loads, and sustained high-RPM clutch slip. Use moderate throttle inputs and allow the friction material to properly mate with the flywheel surface. After break-in, the clutch will provide maximum performance and service life.
When to Choose Stage 2:
Stage 2 clutches are ideal for WRX STi builds with significant modifications including big turbo upgrades (GT35R, EFR turbos, etc.), upgraded fueling, built engines, and aggressive tuning targeting 400+ HP. If you're running a Stage 1 clutch and experiencing slippage, or planning a big turbo build, Stage 2 is the appropriate choice. For extreme builds targeting 500+ HP, consider XClutch's twin-disc options.
Perfect For: Big turbo WRX STi builds, Stage 3+ tuned engines, track day enthusiasts, drag racers, or anyone running 400+ HP who needs reliable high-performance clutch capacity.
Pro Tip: The cushioned ceramic design makes this clutch surprisingly street-friendly for a Stage 2 clutch. While pedal effort will be firmer than stock, engagement is much smoother than traditional ceramic clutches.
Recommended For: WRX STi builds with big turbo upgrades, built engines, and aggressive tuning targeting 400-500 HP.
Upgrade your Subaru WRX STi with XClutch's Stage 2 cushioned ceramic clutch kit - engineered for big power, designed for drivability.