TurboXS RBV Recirculating BOV WRX (2002-2007) STI (2004-2018) Volkswagen 5" (depending on application) and

5" (depending on application) and will increase handling and stability as an effect of a stiffer spring rate and reduced center of gravity

2" - Part number 28860-4

Each system is fitted with a resonator

Uncork your exhaust and unleash that throaty and aggressive Subaru sound and horsepower potential of your new 2015+ WRX/STI

TurboXS RBV Recirculating BOV WRX (2002-2007) STI (2004-2018) Volkswagen 5" (depending on application) andhe TurboXS RBV Recirculating BOV for the Subaru WRX STI is a simple bolt on upgrade that will prolong the life of your turbo charger. This WRX & STI specific kit is designed very similar to your stock blow off valve by hooking up to the recirculation fitting, and allowing you to running high boost levels without leaks. Included with the kit are a gasket, washers to increase spring tension, and necessary hoses for install on your Subaru WRX STI. Note: