TurboXS Catless Stealthback WRX / STI (2002-2007) MINI Cooper and a high-flow dual-stage foam

and a high-flow dual-stage foam air filter

Quicker engagement

PERRIN couplers are fiberglass fortified with smooth inner walls for long lasting high strength and smooth air flow

Ease of installation

TurboXS Catless Stealthback WRX / STI (2002-2007) MINI Cooper and a high-flow dual-stage foamFor the 2002 2007 Subaru WRX and STI owners looking to keep their stock muffler, or use a different axle back, the Turbo XS Stealthback is the exhaust for you. This system for the WRX STI includes Turbo XS's 4" bellmouth downpipe, which tapers to 3" into a 3" catless racepipe, and then into a 3" midpipe. Turbo XS's cat to downpipe connection features an OEM style ball and socket design with a donut gasket, to allow exhaust movement while maintaining a