GrimmSpeed Top Mount Intercooler Splitter
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GrimmSpeed Top Mount Intercooler Splitter - Subaru WRX STI (GDB/GRF)
GrimmSpeed builds this splitter specifically to work with its own Top Mount Intercooler line, closing the gaps that stock ducting leaves behind. If your Subaru WRX STI is running a GrimmSpeed TMIC, this splitter is designed to seal the core properly and push far more ambient air through it, which matters once you're making real power.
This listing covers the Subaru WRX STI (GDB/GRF), 2008-14, fitted with a GrimmSpeed Top Mount Intercooler.
Important: This splitter is designed to fit a GrimmSpeed TMIC only and will not seal correctly against the factory intercooler or other aftermarket cores.
Key Features
- Laser cut 5052 aluminium construction
- Textured black powdercoat finish
- Rivetted assembly (no welded joints to crack)
- EPDM rubber bulb gasket included for sealing
- Mounting provisions for up to three intercooler water sprayers
- CAD designed and flow tested for even air distribution across the core
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your STI is fitted with a GrimmSpeed TMIC before ordering.
Not sure if this splitter suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | WRX STI | GDB | - |
| Subaru | WRX STI | GRF | - |
Technical Specifications
| Spec | Value |
|---|---|
| Material | Laser cut 5052 aluminium, 20 gauge (approx. 0.9 mm) |
| Finish | Textured black powdercoat |
| Gasket | EPDM rubber bulb gasket, included |
| Assembly Method | Riveted joints (no welding) |
| Water Sprayer Provisions | Mounting points for up to 3 intercooler water sprayers |
| Core Volume Increase | Up to 200% (manufacturer claim) |
| Design Process | CAD designed using 3D scanned vehicle data, tested via flow simulation |
| Country of Origin | Made in USA (Minnesota) |
| Fitment | 2008-14 Subaru WRX STI (GDB/GRF), requires GrimmSpeed Top Mount Intercooler |
No instructions available for this product.
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