PERRIN Bypass Valve
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PERRIN Bypass Valve - Subaru WRX (GDA/GGA/GE8/GH8/GV8/GR8/VAG) / STI (GDB/GRF/GVF/VAB) / Forester XT (SG9/SH9)
PERRIN builds turbo hardware engineers actually design for driveability, not just dyno numbers, and the PSP-TAC-600 bypass valve is no exception. It replaces the factory unit on your Subaru WRX or STI with a fully adjustable design, letting you dial in relief pressure and flow characteristics rather than being stuck with the OEM setting.
This listing covers Subaru WRX (GDA/GGA, GE8/GH8, GV8/GR8, VAG), STI (GDB, GRF, GVF, VAB) and Forester XT (SG9, SH9) models from 2004 through 2021. It's available in Red or Black finish via the variant selector on this page — SKU PSP-TAC-600RD or PSP-TAC-600BK.
Key Features
- Adjustable relief pressure for fine tuning boost response
- Flow control adjustment for on the fly tuning
- Direct replacement for the factory bypass valve
- Durable construction suited to daily and track use
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your vehicle's year and configuration before ordering.
Not sure if this bypass valve suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | Forester XT | SG9 | - |
| Subaru | Forester XT | SH9 | - |
| Subaru | WRX | GDA/GGA | - |
| Subaru | WRX | GE8/GH8 | - |
| Subaru | WRX | GV8/GR8 | - |
| Subaru | WRX | VAG | - |
| Subaru | WRX STI | GDB | - |
| Subaru | WRX STI | GRF | - |
| Subaru | WRX STI | GVF | - |
| Subaru | WRX STI | VAB | - |
Technical Specifications
| Spec | Value |
|---|---|
| Colour Options | Red, Black |
| Relief Pressure | Adjustable |
| Flow Control | Adjustable |
No instructions available for this product.

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