• Vents partly to atmosphere, partly recirculated
• "Best of both worlds" sound and drivability
• 6061 aluminum and brass, precision CNC machined
• Modular XS platform allows inlet/outlet changes

Loud When You Want It, Quiet When You Don't

Turbo XS built the Hybrid BOV specifically for drivers who want a valve they can hear when they're driving hard, without it being obnoxiously loud on every single shift during a normal commute. It vents part of the boost to atmosphere for that classic BOV sound, while recirculating the rest back to the intake to keep idle and part-throttle behavior smooth. That balance is exactly what makes it a hybrid rather than a compromise that does neither job particularly well. That's the kind of detail that separates genuine engineering from a basic replacement part.

Built From Real Materials, Genuinely Modular

Machined from 6061 aluminum and brass rather than cast from cheaper alloys, this valve is a direct replacement for the factory Bosch-style bypass valve found on many OEM turbo applications. The modular XS platform design lets you change both the inlet and outlet yourself down the road, meaning this same valve can be converted to a full vent-to-atmosphere setup later with a separately sold outlet and hose plug. It's a valve that grows with your build rather than needing to be replaced outright. It's a small distinction that makes a real difference once you're actually driving on it.

Straight From Subispeed

A genuinely versatile BOV for 2002-2007 Subaru WRX / 2004-2007 Subaru STI — the sound you want when you want it, without the drawbacks of a full vent-to-atmosphere valve.

This Part Fits: