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The ACT Mod‑Twin 225 XX Sprung race kit is built for high‑power AWD competition, offered for 2004–2020 Subaru WRX STI applications. It pairs doubled ceramic friction faces with a Mono‑Drive sprung hub and a balanced CNC flywheel to deliver consistent pedal feel and high heat capacity. Modular and rebuildable, the kit includes pressure plate, puck‑style friction plates, hub assembly and necessary hardware for track use.
ACT 04-20 WRX STI Mod Twin XX Race Kit Sprung Hub Torque Cap 1340ft/lbs Not For Street Use
