About this product
DESCRIPTION
The ACT Mod-Twin 225 Max Extreme Rigid Race Clutch Kit is engineered for 2004–2021 Subaru WRX STI models that require maximum torque capacity and race-proven durability. The Mod-Twin 225 XX twin-disc rigid design pairs twice the ceramic friction surfaces with a solid Mono-Drive chrome-moly hub in a modular package, delivering predictable aggressive engagement and rapid power transfer for drag, road, and rally racing. Rated to handle up to 1,340 ft-lbs of torque, the kit includes a CNC-machined, dynamically balanced flywheel and heat-treated components for long service life under extreme launches and repeated high-RPM use. Mod-Twin clutches are fully rebuildable and serviceable, with many components available separately to simplify maintenance between events.
WHY
This kit is built for competitors and high-powered AWD drivers who need a clutch that survives hard launches and repeated shifts without giving up reliability. The twin-disc ceramic plates and Mono-Drive hub provide high heat capacity and robust torque transfer while preserving input shaft life. With ACT’s focus on repeatable clamp load, serviceability, and SFI-rated durability, this clutch delivers the confidence and longevity required for serious racing applications.
FEATURES:
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Mod-Twin 225 XX twin-disc rigid design
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Torque capacity up to 1,340 ft-lbs
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Chrome-moly heat-treated mono-drive hub
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Complete kit includes pressure plate, alignment tool, release bearing, pilot bearing
- Fully rebuildable; SFI certified and 100% clamp load tested
COMPATIBILITY
2004-2021 STI
SPECIFICATIONS
Description supplied by WRXDaily through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.
