TurboXS WRX08-RFL RFL Blow Off Valve for 2008-14 Subaru WRX/STI

Vehicle Fitment

• 2008-2014 Subaru WRX (2.5L turbo; hatchback & sedan)
• 2008-2014 Subaru WRX STI (Selected trims AWD)

Features

• RFL (Recirculating Flow Level) Blow Off Valve for smoother recirculation
• Improved boost control and response versus stock bypass valve
• Quiet operation that reduces compressor surge on gear changes
• CNC-machined aluminum for strength and durability
• Black anodized finish for corrosion resistance
• Direct bolt-on replacement for the factory bypass valve
• Works with stock and many aftermarket intake piping systems
• Designed to maintain drivability in daily and performance use

Specifications

• Part Number: WRX08-RFL
• Valve Type: RFL Blow Off Valve (recirculating design)
• Fitment: 2008-2014 Subaru WRX & WRX STI
• Material: CNC-machined aluminum body
• Finish: Black anodized surface
• Installation: Direct bolt-on bypass valve replacement
• Compatibility: Fits stock intake plumbing without adapter
• Sound Profile: Subtle recirculating operation with reduced hissing

Included Components

• 1x TurboXS RFL Blow Off Valve assembly
• 1x Vacuum hose fitting
• Installation hardware (bolts, clamps, and seals)

Product Description

The TurboXS WRX08-RFL RFL Blow Off Valve is a performance-oriented bypass valve engineered specifically for 2008-2014 Subaru WRX and WRX STI models equipped with the 2.5 L turbo engine. This RFL design recirculates pressure back into the intake tract rather than fully venting to atmosphere, providing smoother airflow transitions and improved throttle response compared with the factory valve. The result is reduced compressor surge, quieter operation, and better drivability during daily use or spirited driving.

Constructed from high-strength CNC-machined aluminum with a corrosion-resistant black anodized finish, the WRX08-RFL installs as a direct bolt-on replacement for the OEM bypass valve using existing intake pipe locations. Compatible with stock intake setups and many aftermarket systems, this RFL valve enhances boost control and turbo behavior while retaining a refined sound profile. Ideal for owners looking for a balanced performance upgrade without compromising daily drivability.