Spec Stage 3+ Clutch Kit | 2004-2009 Subaru WRX STI (SU303F)SPEC Stage 3+ Clutch Kit 20042009 Subaru Impreza WRX STI 2. 0L Turbo Part #: SU303F Overview The SPEC Stage 3+ Clutch Kit is designed for high performance street and race applications, offering a perfect balance of durability, engagement, and drivability for your Subaru WRX STI. Built to handle increased power levels and aggressive driving styles, this clutch kit is ideal for enthusiasts seeking reliable performance without sacrificing daily