
The PERRIN Bypass Valve (BPV/BOV) is a high-performance replacement for the weak, plastic factory valve found on the 2015–2021 Subaru WRX. Designed to deliver quicker boost response, improved reliability, and consistent performance, this fully adjustable aluminum valve eliminates common OEM issues such as boost leaks and slow response under load.
Replaces the leaky, slow-responding OEM plastic bypass valve
Improves throttle response and boost recovery
Adjustable relief pressure for custom tuning
Adjustable flow control to fine-tune performance
CNC-machined 6061 aluminum body and piston
Durable red anodized finish with black anodized cap
Designed for long-term reliability under increased boost
Boost Side Tube OD: 1.325"
Intake Side Tube OD: 1.00"
Body Material: 6061 Aluminum
Body Finish: Red Anodized
Piston Material: 6061 Aluminum
Piston Finish: Clear Anodized
Spring: Stainless Steel
Flange Material: 6061 Aluminum
Cap Material: 6061 Aluminum
Cap Finish: Black Anodized
(1) PERRIN Bypass Valve (BPV)
(1) Plastic connector
Warranty & installation instructions
Fits:
2015–2021 Subaru WRX
2014–2018 Subaru Forester XT