The ACT SB12-XTSS clutch kit is engineered for drivers who demand dependable performance from a street-driven or race-oriented Subaru Impreza. This kit combines an ACT Xtreme pressure plate with a Performance street sprung disc to deliver increased clamping force, fast shift action, and reliable friction performance under demanding conditions. It is designed for select 2009–2013 Subaru Impreza applications; verify vehicle fitment before installation.
The ACT Xtreme pressure plate uses an exclusive diaphragm design to increase clamp load, reduce deflection, and help maximize clutch service life. Each diaphragm undergoes a four-stage heat-treating process for consistent performance, while precision cover stampings add rigidity and manufacturing consistency. The pressure plate is 100% clamp-load tested and dynamically computer balanced to support smooth, reliable operation at high engine speeds. Pedal effort is moderate to heavy, with engagement characteristics suited to performance-focused driving.
The included Performance street sprung disc uses premium organic friction materials with high copper content to improve heat transfer and help reduce fade. Steel-backed linings provide increased burst strength and durability, while reduced marcel promotes quicker shift action when paired with the ACT pressure plate. The sprung hub design supports smooth engagement with quiet operation and a level of gear rattle suitable for street use. ACT recommends this XT/Performance Street Sprung combination for both street and race applications where longer friction life, strength, and repeatable performance are important. The kit is backed by ACT's one-year industry warranty.
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