GrimmSpeed Top Mount Intercooler Splitter
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GrimmSpeed Top Mount Intercooler Splitter - Subaru WRX STI (VAB)
The factory splitter is choking your top mount intercooler's airflow. GrimmSpeed built this splitter specifically to correct that, feeding maximum ambient air into their TMIC core on the Subaru WRX STI. SKU GRM093128.
This listing covers the 2015-21 Subaru WRX STI (VAB). It's designed to seal and mate perfectly with the GrimmSpeed Top Mount Intercooler, opening up the core inlet area for a significant increase in effective airflow volume.
Important: This splitter is designed to fit GrimmSpeed's own TMIC. Fitment with other intercoolers, including factory or other aftermarket units, is not confirmed.
Key Features
- Laser cut 5052 aluminium construction
- Textured black powdercoat finish
- Riveted assembly for durability
- EPDM rubber bulb gasket included
- Provision for up to three intercooler water sprayers
- CAD designed and flow simulation tested
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your STI's model year and TMIC setup 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 | VAB | EJ257 |
Technical Specifications
| Spec | Value |
|---|---|
| Material | 5052 aluminium, 20 gauge, laser cut |
| Construction | Riveted assembly (not welded) |
| Finish | Textured black powdercoat |
| Gasket | EPDM rubber bulb gasket, included |
| Design Process | CAD designed, flow simulation tested, 3D scanned vehicle data |
| Water Sprayer Provisions | Mounting features for up to 3 intercooler water sprayers |
| Core Volume Increase | Up to 200% increase in internal core volume (claimed) |
| Fitment | 2015–21 Subaru STI equipped with GrimmSpeed Top Mount Intercooler |
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