Perrin Performance
Perrin Equal Length Header Subaru WRX 2022-2026 | PSP-EXT-058
2022+ Subaru WRX (VB)
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Overview
The PERRIN Equal Length Header for the 2022–2026 Subaru WRX is a bolt-on exhaust upgrade engineered to improve power and torque across the RPM range by eliminating the restrictive factory exhaust manifold. Designed specifically for the FA24 turbocharged engine, this header features equal-length primary tubes to promote more balanced exhaust scavenging and improved turbo spool characteristics. It's a foundational upgrade for enthusiasts building a Stage 1 street tune or pushing toward higher-horsepower builds.
Key Features & Benefits
- Equal-Length Primary Tube Design — Balances exhaust pulse timing across all four cylinders for more consistent turbo spool and improved power delivery throughout the rev range.
- Larger Primary and Secondary Tubes — Reduces exhaust backpressure compared to the restrictive OEM manifold, allowing the turbocharger to breathe more freely and build boost more efficiently.
- Bolt-On Fitment — Engineered specifically for the 2022–2026 Subaru WRX (FA24 engine), designed to use factory mounting points for straightforward installation without cutting or fabrication.
- Performance Gains on Stage 1 Builds — PERRIN rates this header at approximately 5 WHP on Stage 1 cars; gains scale significantly on higher-horsepower builds (350+ WHP), where exhaust flow becomes a greater limiting factor.
- PERRIN Engineering & Quality Construction — Built to PERRIN's manufacturing standards with a focus on fitment accuracy, durability, and compatibility with supporting bolt-on modifications.
What's Included
- PERRIN Equal Length Header (PSP-EXT-058)
- All necessary hardware for installation (verify contents in box — consult PERRIN's product page or installation instructions for a complete hardware list)
Specifications
| Part Number | PSP-EXT-058 |
|---|---|
| SKU | perPSP-EXT-058 |
| Brand | PERRIN Performance |
| Product Type | Exhaust Header / Exhaust Manifold |
| Engine Application | Subaru FA24 Turbocharged |
| Design | Equal Length |
| California Emissions (CARB) | Not legal for sale or use in California |
Fitment & Compatibility
This header is designed exclusively for the 2022–2026 Subaru WRX equipped with the FA24 turbocharged engine. It is not compatible with older WRX models (2015–2021 EJ/FA20 platform) or the WRX STI. Always confirm your specific model year and engine code before ordering. This product cannot be sold or used in the state of California.
Installation
The PERRIN Equal Length Header is designed as a bolt-on replacement for the factory exhaust manifold using OEM mounting points. While an experienced DIY mechanic with proper tools and lift access can complete the installation, professional installation is recommended to ensure proper torque specs, gasket seating, and post-install tuning. A tune is strongly recommended after installing this header to take full advantage of the increased exhaust flow and to ensure safe, optimized operation.
Installation: Official Perrin installation instructions (PDF)