Subaru WRX STI Performance Parts

The Subaru WRX STI is a legend — all-wheel drive, turbocharged, and built for those who want the full driver's car experience. The Speed Foundry carries performance parts engineered specifically for the WRX STI (2004–2021), including cold air intakes from COBB, Perrin, and GrimmSpeed; exhaust systems from aFe Power, Borla, and Corsa; coilovers and suspension from Tein, BC Racing, and Whiteline; intercoolers from Mishimoto and Process West; turbocharger upgrades from COBB and Garrett; fuel system components, radiators, brake upgrades, clutch kits, and more. Every part is fitment-verified for the EJ257 and FA20 platform. Use our vehicle search to find parts for your exact year and trim — including the S209, Type RA, and Series.HyperBlue editions.