TurboXS W15-XS-RBV Rebuildable Bypass Valve for 2015-21 Subaru WRX

Vehicle Fitment

• 2015-2021 Subaru WRX (All trims AWD; FA20 2.0L turbo)

Features

• Rebuildable bypass valve designed for high-performance applications
• Pneumatic diaphragm and spring assembly can be serviced and tuned
• Improved boost control and responsiveness over stock bypass valve
• Robust design optimized for stock and modified turbo systems
• Red anodized finish for corrosion resistance and visual appeal
• Direct bolt-on replacement for factory bypass valve
• Includes rebuild kit components for future servicing
• Designed to work with stock intake charge piping

Specifications

• Part Number: W15-XS-RBV
• Valve Type: Rebuildable bypass valve (RBV)
• Fitment: 2015-2021 Subaru WRX (FA20 turbo engine)
• Material: Anodized aluminum body and components
• Finish: Red anodized surface
• Serviceability: Fully rebuildable diaphragm and spring assembly
• Installation: Direct replacement bypass valve
• Compatibility: Works with stock and many aftermarket intake pipes

Included Components

• 1x TurboXS rebuildable bypass valve assembly
• 1x Rebuild kit components (diaphragm, spring, seals)
• 1x Vacuum hose and fittings
• Installation hardware

Product Description

The TurboXS W15-XS-RBV Rebuildable Bypass Valve is a performance-focused upgrade engineered specifically for 2015-2021 Subaru WRX models equipped with the FA20 turbo engine. This rebuildable valve replaces the factory bypass valve with a serviceable unit that can be tuned and maintained over time, making it ideal for enthusiasts who push the limits of their turbo system. Unlike fixed, non-serviceable valves, the RBV's diaphragm and spring assembly can be replaced or tuned to suit evolving performance needs, giving better control of boost and throttle response under varied conditions.

Constructed of anodized aluminum and designed as a direct bolt-on replacement, the W15-XS-RBV installs easily into the WRX's intake plumbing without the need for custom adapters. The rebuildable nature of the valve means owners can service internal components as needed - extending service life and allowing for future adjustments if power levels change. This bypass valve is suitable for daily-driven cars as well as modified WRXs with upgraded turbos or intake systems, offering enhanced performance and reliability along with the ability to maintain and tune the valve over time.