Borla XR-1 Single-Tip Cat Back Exhaust Subaru WRX / STI 2002-2007 vendor_Prosport specify which turbo you have

specify which turbo you have when ordering This product is built with a predetermined actuator spring suitable for at or slightly above factory boost levels

Part #: SU301

grip can be biased towards the front end of the car

Brian Crower produces first-rate cams at affordable prices

installation grease and instructions are included in each Whiteline swaybar kit for your WRX

Borla XR-1 Single-Tip Cat Back Exhaust Subaru WRX / STI 2002-2007 vendor_Prosport specify which turbo you havePart #: 140075 The Borla XR 1 Single Tip Catback Exhaust for the WRX and STI features 3in piping with Borla's patented XR 1 multi core muffer for optimal flow. This system does not use a resonator like the Hush, so it has a deep, powerful tone. The section of the catback that bolts to the downpipe is slip fit, and can be replaced with the 3in adapter for future upgradability. The downpipe section Borla includes will bolt perfectly to your stock