Not too loud and not too quiet, the W15-XS-HYB from TurboXS is the valve for you if you want an upgraded Blow Off Valve that you can hear...

The W15-XS-RBV from TurboXS is the valve to get if you want an upgraded Bypass Valve but want to fully recirculate the vented boost back...

The WS08-CP-V2 is a 3 inch High Flow Catalytic Converter designed specifically for your 2008-2014 Subaru WRX and STi.  It has a 100cpi...

If you want performance gains for your 2015+ WRX BUT you want to keep a catalytic converter AND don't feel like dropping a ton of money,...

A 3" straight through design unleashes all the power your engine can make. Unique flange design allows the WS02-RMA-TI to be bolted...

The W15-XS-RBV from TurboXS is the valve to get if you want an upgraded Bypass Valve but want to fully recirculate the vented boost back...

Midpipe for version 2 TurboXS exhaust systems.  Unlike our original midpipe design which was designed to be used only with a TurboXS...