Boomba Fully Adjustable Bypass Valve Ford Focus ST 2013-2018 Color:Red The TurboXS WRX STI Standard

The TurboXS WRX STI Standard Rear Muffler Assembly is the epitome of subdued looks but performance sound

Kit includes both left and right side under spoilers

Hose Construction AQP Elastomer Tube

3" 304 SS Mandrel-Bent Tubing

Boomba Fully Adjustable Bypass Valve Ford Focus ST 2013-2018 Color:Red The TurboXS WRX STI StandardFor adjustability this piece has three threaded holes, we ship this piece with all of the holes plugged and we also include a 2mm allen key for removal. This makes the piece full recirculating. For fine tuning and venting to atmosphere, remove and add screws as desired to reach the amount of venting or recirculation you are looking for. Want the added strength and performance of our Blow Off Valve but not the biggest fan of the added noise? Search no