GrimmSpeed Equal Length Header
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GrimmSpeed Equal Length Header - Subaru WRX (VAG/VBH/VNH) / Forester XT (SJG)
GrimmSpeed has built its reputation on detail driven exhaust engineering, and this equal length header (SKU GRM113008) is a ground up redesign of the factory manifold on the Subaru WRX and Forester XT. It replaces the OEM's uneven, restrictive runners with a genuine equal length layout that improves twin scroll turbine efficiency and spool response.
This listing covers the Subaru WRX (VAG/VBH/VNH) and Subaru Forester XT (SJG), both sharing the FA20 twin scroll turbocharged platform. It's a direct bolt on replacement for the factory manifold with no tune required.
Key Features
- Full 304 stainless steel construction, including flanges, tubing, collector and badge
- True equal length runners, CNC bent and trimmed as a single piece with less than 1% length variance and under 5 degrees bend variance
- Cast merge collector for smooth, low restriction flow and consistent performance
- 12.7mm (1/2 in) thick CNC cut head flanges and 14 gauge tubing for added durability
- Retains full factory ground clearance, no skid plate spacers required
- Includes J-pipe/turbo bracket, gaskets and hardware for installation
- No tune required, straightforward bolt on fitment
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and configuration are confirmed before ordering.
Not sure if this header suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | Forester XT | SJG | - |
| Subaru | WRX | VAG | - |
| Subaru | WRX | VBH | - |
| Subaru | WRX | VNH | - |
Technical Specifications
| Spec | Value |
|---|---|
| Material | Full 304 stainless steel construction (flanges, tubing, collector and badge) |
| Flange Thickness | 12.7 mm (1/2 in) CNC cut, faced flat |
| Tubing Gauge | 14ga stainless steel |
| Runner Length Variance | Less than 1% variance longest to shortest runner |
| Runner Bend Angle Variance | Maximum 5 degrees variance between runners |
| Collector Type | Cast merge collector, low restriction inlet and outlet |
| Runner Construction | Single piece CNC bent and trimmed tubing, welded inside and outside flange |
| Tune Required | No |
| Ground Clearance | Clears factory skid plate, no spacers required |
| Included Components | J-pipe/turbo bracket, gaskets, and hardware |
No instructions available for this product.

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