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The ACT Mod‑Twin 225 HD Sprung street kit is made for Subaru 2004–2020 WRX STI applications, offering high torque capacity with a sprung Mono‑Drive hub that reduces driveline shock and extends input shaft life. Steel‑backed organic friction plates provide stable engagement and heat resistance for demanding street use. The fully rebuildable kit includes a CNC balanced flywheel and all major clutch components.
ACT Subaru 04-20 WRX STI Mod Twin HD Street Kit Sprung Mono-Drive Hub Torque Capacity 700ft/lbs
