Designed in the same vein as all of our "RFL" blow off valves, the W15-XS-RFL is Really F'n Loud. Designed specifically for the 2015 WRX using our all new "XS" BOV platform, this valve is designed to vent 100% to atmosphere for the loudest BOV sound possible. This valve comes complete with everything you need to replace your stock bypass valve.
The XS platform adds incredible versatility to this Blow Off Valve. . . Show More >