ACT HD-MRace Rigid 6 Puck Clutch Kit (SB10-HDR6) | Subaru STI 2004-2021

The ACT HD-MRace Rigid 6 Puck Clutch Kit (SB10-HDR6) is engineered for 2004–2021 Subaru STI owners pursuing maximum track and race performance. The rigid 6-puck design delivers lightning-fast engagement, extreme torque handling, and aggressive throttle response, making it ideal for high-boost, fully tuned engines and race-oriented builds where precision and consistency are critical.

KEY FEATURES

• Rigid 6-puck clutch disc engineered for ultra-fast engagement and maximum torque capacity
• Complete kit includes clutch disc, pressure plate, and release bearing for direct-fit installation
• High-performance friction material ensures reliable engagement under extreme load and temperature conditions
• Optimized for track, race, and highly modified street builds
• Direct-fit installation using OEM crankshaft and clutch mounting points
• Provides aggressive pedal feel while maintaining durability for repeated use

TECHNICAL SPECIFICATIONS

• Platform Compatibility: Subaru STI 2004–2021
• Clutch Type: HD-MRace Rigid 6 Puck Clutch Kit
• Included Components: Clutch disc, pressure plate, release bearing
• Torque Capacity: 600 lb-ft (verified for SB10-HDR6 configuration)
• Horsepower Support: Up to 650 HP (verified for SB10-HDR6 configuration)
• Material: High-performance friction disc with heat-treated pressure plate for durability under extreme conditions
• Installation: Direct-fit replacement using OEM flywheel and clutch bolt patterns
• Performance Benefit: Ultra-fast engagement, maximum torque handling, aggressive throttle response, and consistent operation under high-stress conditions

VEHICLE FITMENT

• Subaru STI 2004–2021

ACT delivers proven, data-driven performance solutions engineered to optimize your Subaru with unmatched precision and reliability.