ACT Heavy Duty Performance Street Disc Clutch Kit (SB10-HDSS) | Subaru STI 2004-2021

The ACT Heavy Duty Performance Street Disc Clutch Kit (SB10-HDSS) is designed for 2004–2021 Subaru STI owners who need a robust clutch solution for street driving with enhanced performance capability. This kit features a heavy-duty disc optimized for high torque handling, smooth engagement, and consistent pedal feel ideal for spirited street use, light track duty, and moderate engine upgrades.

KEY FEATURES

• Heavy duty clutch disc designed for high torque applications with smooth engagement
• Enhanced clamp load for improved pedal feel and reduced slippage under load
• Complete kit includes clutch disc, pressure plate, and release bearing for direct-fit installation
• Durable friction material engineered to withstand heat and maintain performance over time
• Optimized for stock or moderately tuned engines while maintaining daily drivability
• Direct-fit replacement using OEM flywheel and release components

TECHNICAL SPECIFICATIONS

• Platform Compatibility: Subaru STI 2004–2021
• Clutch Type: Heavy Duty Performance Street Disc Clutch Kit
• Included Components: Clutch disc, pressure plate, release bearing
• Torque Capacity: 550 lb-ft (verified for SB10-HDSS configuration)
• Horsepower Support: Up to 600 HP (verified for SB10-HDSS configuration)
• Material: High-performance friction disc with heat-treated pressure plate for durability
• Installation: Direct-fit replacement using OEM flywheel and clutch bolt patterns
• Performance Benefit: Smooth engagement, consistent pedal feel, and improved torque handling for street and light track use

VEHICLE FITMENT

• Subaru STI 2004–2021

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