XClutch 15-21 Subaru WRX STi Base 2.5L 9in Twin Sprung Ceramic Clutch Kit

XClutch performance upgrades have been engineered to provide the ultimate in clutch performance. Utilising the latest pressure plate design and friction material composition, XClutch upgrades offer the ideal balance between driveability and performance for different vehicle applications. The pivot point and diaphragm design are carefully analysed to ensure positive pedal feel and increased clamping force. The twin disc clutch with sprung ceramic friction discs is designed for high horsepower motorsport applications where a high heat capacity is required. The sprung hub in this kit also helps to minimise shock loading on the transmission. The XClutch twin sprung disc offers a sprung central hub which provides dampening for vehicles retaining standard transmissions in motorsport applications.

• Friction Disc, Pressure Plate, Release Bearing, Flywheel - Pilot, Aligning Tool and Technical Service Bulletins (as required)
• Recommended for Track Use
• Twin Disc, Sprung Ceramic
• Lightweight Alloy Hat

The XClutch XKSU23531-2B twin sprung ceramic clutch kit is engineered for high-horsepower motorsport applications using the 2015-2021 Subaru WRX STI 2.5L platform. Combining advanced pressure plate design with specialized friction material, this performance clutch delivers increased clamping force, reliable engagement, and a strong balance between track-focused performance and practical drivability.

The twin-disc configuration increases heat capacity and helps maintain consistent clutch performance during demanding motorsport use. Sprung ceramic friction discs provide strong torque-handling capability, while the sprung central hub helps reduce shock loading through the drivetrain. This design is especially suited to vehicles retaining a standard transmission and requiring additional damping during competition or track driving.

XClutch carefully analyzes the pivot point and diaphragm design to provide positive pedal feel and responsive clutch operation. The lightweight alloy hat helps reduce rotating mass, supporting quicker engine response without compromising the strength required for high-performance applications. This kit is recommended for track use and is intended for drivers seeking a durable upgrade over the original clutch system.

Each XClutch XKSU23531-2B kit includes the friction discs, pressure plate, release bearing, flywheel, pilot component, aligning tool, and applicable technical service bulletins. Verify vehicle configuration and transmission compatibility before installation. This clutch kit is designed for the Subaru WRX STI model years listed and is not intended as a street-oriented replacement for every driving application.

Features:

• Application: Fits 2015-2021 Subaru WRX STI models with the 2.5L engine
• Clutch Design: Twin-disc assembly with sprung ceramic friction discs
• Performance Use: Recommended for high-horsepower motorsport and track applications
• Damping: Sprung central hub helps minimize shock loading through the transmission
• Pressure Plate: Engineered diaphragm and pivot-point design for positive pedal feel and increased clamping force
• Construction: Lightweight alloy hat supports reduced rotating mass
• Included Components: Friction discs, pressure plate, release bearing, flywheel, pilot component, aligning tool, and applicable technical service bulletins

Fitment:
Subaru Impreza WRX 2004
Subaru Impreza WRX 2005
Subaru Impreza WRX STI 2004
Subaru Impreza WRX STI 2005
Subaru Impreza WRX STI 2006
Subaru Impreza WRX STI 2007
Subaru Impreza WRX STI 2008
Subaru Impreza WRX STI 2009
Subaru Impreza WRX STI 2010
Subaru Impreza WRX STI 2011
Subaru Impreza WRX STI 2012
Subaru Impreza WRX STI 2013
Subaru Impreza WRX STI 2014
Subaru Impreza WRX STI Limited 2007
Subaru Impreza WRX STI Limited 2011
Subaru Impreza WRX STI Limited 2012
Subaru Impreza WRX STI Limited 2013
Subaru Impreza WRX STI Limited 2014
Subaru Impreza WRX STI Special Edition 2010
Subaru Legacy GT spec.B 2007
Subaru Legacy GT spec.B 2008
Subaru Legacy GT spec.B 2009
Subaru WRX STI Base 2015
Subaru WRX STI Base 2016
Subaru WRX STI Base 2017
Subaru WRX STI Base 2018
Subaru WRX STI Base 2019
Subaru WRX STI Base 2020
Subaru WRX STI Base 2021
Subaru WRX STI Launch Edition 2015
Subaru WRX STI Limited 2015
Subaru WRX STI Limited 2016
Subaru WRX STI Limited 2017
Subaru WRX STI Limited 2018
Subaru WRX STI Limited 2019
Subaru WRX STI Limited 2020
Subaru WRX STI Limited 2021
Subaru WRX STI S209 2019
Subaru WRX STI Series.HyperBlue 2016
Subaru WRX STI Type RA 2018