ACT Heavy Duty Race Sprung 4 Puck Clutch Kit Includes Flywheel (SB11-HDG4) | Subaru WRX 2006-2025

The ACT Heavy Duty Race Sprung 4 Puck Clutch Kit Includes Flywheel (SB11‑HDG4) is engineered for 2006–2025 Subaru WRX owners seeking a complete clutch and flywheel upgrade capable of aggressive performance and dependable holding power. This full kit combines a sprung 4‑puck race‑style disc with a heavy duty pressure plate and ACT Streetlite flywheel for strong torque handling, smoother engagement relative to rigid designs, and improved throttle response ideal for high‑power street and race builds where reliability under load is essential.

KEY FEATURES

• 4‑puck sprung clutch disc engineered for responsive engagement and reduced drivetrain shock
• Heavy duty diaphragm pressure plate increases clamp load and enhances durability under extreme conditions
• Included ACT Streetlite flywheel reduces rotational mass for improved throttle response and quicker rev transitions
• Complete kit includes clutch disc, pressure plate, flywheel, release bearing, pilot bearing, and alignment tool for direct‑fit installation
• Ceramic friction material delivers high heat tolerance and consistent performance under demanding applications
• Recommended for high‑power street, autocross, or track use with tuned engines

TECHNICAL SPECIFICATIONS

• Platform Compatibility: Subaru WRX 2006–2025
• Clutch Type: Heavy Duty Race Sprung 4 Puck Clutch Kit with Flywheel
• Included Components: Sprung 4‑puck clutch disc, heavy duty pressure plate, ACT Streetlite flywheel, release bearing, pilot bearing, alignment tool
• Torque Capacity: 574 lb‑ft (verified for SB11‑HDG4 configuration)
• Horsepower Support: Up to ~620 HP (approximate based on verified torque capacity)
• Disc Diameter: 9.4 in / 240 mm ceramic sprung race disc
• Flywheel Type: Streetlite lightweight steel flywheel
• Material: Ceramic friction disc with heavy duty pressure plate and balanced Streetlite flywheel
• Installation: Direct‑fit replacement using OEM clutch and crankshaft bolt patterns
• Performance Benefit: Enhanced torque handling, smoother sprung engagement, improved throttle response, and reliable operation under high stress

VEHICLE FITMENT

• Subaru WRX 2006–2025

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