Vehicle Fitment

  • 2004-2014 Subaru Impreza WRX STI (2.5-L EJ25T Turbo; manual transmission)
  • 2015-2021 Subaru WRX STI (2.5-L EJ25T Turbo; manual transmission)

Fitment Notes

  • Stage-2 Steel-Back Brass-Plus sprung-hub disc with matched pull-type performance pressure plate
  • Includes pilot bearing (if applicable), throw-out bearing, alignment tool, and hardware
  • Flywheel not included; kit is not compatible with automatic transmissions or non-STI EJ25 platforms
  • Mandatory 300-mile break-in; 500-mile break-in strongly recommended

Features

  • Up to 80% greater torque capacity than stock
  • Steel-back disc with Brass-Plus friction facing for durability
  • Sprung-hub design absorbs driveline shock for smoother engagement
  • Performance pressure plate optimized for street performance and occasional track use
  • Direct-fit kit with included bearings, alignment tool, and hardware
  • Smooth engagement with minimal chatter; durable under boost
  • Manufactured in the USA
  • Backed by Competition Clutch’s 90-day limited warranty

Specifications

  • Kit Type: Stage-2 Clutch Kit (disc + plate + bearings)
  • Disc Material: Brass-Plus friction on steel-back
  • Disc Style: Sprung hub, pull-type plate
  • Torque Capacity: up to 425-ft-lbs at wheel
  • Fitment: Subaru WRX STI 2004-2021 (2.5-L Turbo; manual only)
  • Flywheel Included: No
  • Warranty: 90-day limited

Included Components

  • 1- Brass-Plus sprung-hub clutch disc
  • 1- Performance pull-type pressure plate
  • 1- Pilot bearing or bushing (if applicable)
  • 1- Throw-out bearing
  • 1- Alignment tool
  • Installation hardware and instructions

Product Description

The Competition Clutch 15030-2100 Stage-2 Steel-Back Brass-Plus Clutch Kit is engineered specifically for Subaru WRX STI models from 2004 through 2021 equipped with the EJ25T turbo engine and manual gearbox. Featuring a heavy-duty steel-back disc with Brass-Plus friction surface and pulled-type pressure plate, this kit delivers up to 80% increased torque capacity over factory clutches.

With a sprung-hub disc design, the kit smooths out driveline shock and reduces chatter while maintaining aggressive engagement for spirited street driving or light track use. The kit includes pilot and throw-out bearings, alignment tool, and hardware for seamless installation (flywheel sold separately).

Mandatory break-in of 300 miles (500 recommended) ensures longevity and consistent feel. Made in the USA and backed by a 90-day limited warranty, the 15030-2100 offers robust performance, smooth engagement, and solid reliability for STI enthusiasts seeking a true upgrade.



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