ACT Mod Twin 225 Xtreme Duty Sprung Street Twin Disk Clutch Kit (T2S-S05) | Subaru STI 2004-2021

The ACT Mod Twin 225 Xtreme Duty Sprung Street Twin Disk Clutch Kit (T2S‑S05) is engineered for 2004–2021 Subaru STI owners who want a rugged, high‑performance twin‑disc clutch that still delivers smooth, street‑friendly engagement. Featuring dual 225 mm friction discs with a sprung center design to reduce drivetrain shock and chatter, this Xtreme Duty street twin clutch provides exceptional torque capacity, refined engagement, and enhanced durability perfect for high‑output street vehicles and performance builds where both comfort and holding power matter.

KEY FEATURES

• Dual 225 mm friction discs increase holding power while maintaining smooth, street‑oriented engagement
• Sprung center disc design reduces vibration, noise, and driveline shock for a more refined clutch feel
• Xtreme Duty pressure plate engineered for higher clamp load and increased durability under load
• Includes clutch discs, pressure plate, release bearing, pilot bearing, and alignment tool for a complete direct‑fit solution
• Optimized for street performance builds with high torque requirements and occasional spirited driving
• Direct‑fit design integrates with factory crankshaft and clutch mounting points for straightforward installation

TECHNICAL SPECIFICATIONS

• Platform Compatibility: Subaru STI 2004–2021
• Clutch Type: Mod Twin 225 Xtreme Duty Sprung Street Twin Disk Clutch Kit
• Included Components: Dual friction discs, heavy duty Xtreme pressure plate, release bearing, pilot bearing, alignment tool
• Torque Capacity: ~650 lb‑ft (verified for T2S‑S05 configuration)
• Horsepower Support: Up to ~700 HP (approximate based on verified torque capacity)
• Disc Diameter: Dual 225 mm friction discs for increased surface area and torque capacity
• Material: Xtreme Duty friction compounds with heavy‑duty pressure plate for durability under demanding conditions
• Installation: Direct‑fit replacement using OEM crankshaft and clutch bolt patterns
• Performance Benefit: Smooth yet aggressive engagement, high torque handling, refined drivability, and extended component life

VEHICLE FITMENT

• Subaru STI 2004–2021

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