GrimmSpeed V2 Bypass Valve Red For Subaru 15-21 WRX (126033RED) 1523 The OEM piece is made

The OEM piece is made from flexible plastic and utilizes soft bushings

A BBK catted X pipe is the best way to really improve your Mustangs exhaust flow over the restrictive factory pipe to increase overall performance plus it will sound great with an additional muscle car sound

For use with all Mechanical

FM4-HDR6 kit features ACT's most popular Heavy Duty pressure plate

GrimmSpeed V2 Bypass Valve Red For Subaru 15-21 WRX (126033RED) 1523 The OEM piece is madeThe days of sacrificing performance to leaky BPVs are over, because the long awaited GrimmSpeed Bypass Valves are here! The long awaited return of the GrimmSpeed Bypass Valves is here! Our valves have been a highly sought after product, but due to the intensive assembly process, it has been hard to keep them on the shelves, which in turn causes frustration among our customers. To address this issue, our team has worked diligently to Redesign the BPV