Turbo XS WS02-XS-RFL RFL Blow Off Valve for 2002-2007 Subaru WRX/STI

Vehicle Fitment

• 2002-2007 Subaru Impreza WRX (Turbocharged EJ20/EJ25)
• 2002-2007 Subaru Impreza WRX STI (Turbocharged EJ20/EJ25)

Features

• Performance RFL (Real Freaking Loud) blow off valve design
• Releases excess compressor pressure to reduce surge
• Produces aggressive turbo sound under throttle lift
• Direct bolt-on replacement for stock BOV
• Aluminum construction for durability and lightweight
• Precision CNC machining for consistent performance
• Includes flange gasket and mounting hardware
• Rated for use with boost pressures up to ~35 psi

Specifications

• Part Number: WS02-XS-RFL
• Material: CNC machined aluminum body and flange
• Valve Type: Atmospheric RFL blow off valve
• Mounting: 2-bolt flange (standard WRX/STI turbo flange)
• Fitment Engine: Turbocharged EJ20 / EJ25
• Applicable Boost: Up to ~35 psi
• Adjustability: Yes (spring preload for response tuning)
• Finish: Anodized aluminum

Included Components

• 1x Turbo XS RFL blow off valve (WS02-XS-RFL)
• 1x Flange gasket
• 1x Mounting hardware set

Product Description

The Turbo XS WS02-XS-RFL RFL Blow Off Valve is a high-performance aftermarket turbocharger component engineered specifically for turbocharged Subaru WRX and WRX STI models from 2002 to 2007. Designed to replace the restrictive stock blow off valve, the RFL (Real Freaking Loud) unit quickly and efficiently vents excess boost pressure when throttle is lifted, helping to prevent compressor surge and reduce wear on turbo internals.

Built from CNC machined aluminum with a direct bolt-on flange design, the RFL Blow Off Valve offers both enhanced sound and performance for enthusiasts looking to improve throttle response and throttle-off dynamics. Its distinctive whoosh under lift-off adds an engaging auditory element to your WRX/STI's driving experience. Included is the necessary gasket and hardware for straightforward installation - making this an ideal upgrade for street performance and spirited driving.