Competition Clutch 15030-2100 Stage 2 Brass-Plus Kit for 04-21 Subaru STI 2.5L

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.