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GrimmSpeed 08-14 Subaru STI (fits GS TMIC) TMIC Splitter


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These have both been a long time in the making and as the popularity of GrimmSpeed intercooler offerings has skyrocketed, we've had a massive amount of demand for splitter options that maximize performance of our Top Mount Intercooler on the 08-14 STI platform, with some users producing 600-700whp with them. These splitters are designed to seal perfectly with your GrimmSpeed TMIC, ensuring that the system works as efficiently as possible. With the dense cores that we use, forcing ambient air through the core with a properly fitting splitter is more important than ever and these splitters will allow you to do that with ease. For STI owners that are currently using a GrimmSpeed TMIC, this is a must have.

Quick Specs

Designed in CAD - Perfect mating with GrimmSpeed TMIC

Laser Cut 5052 Aluminum Construction - Durable and lightweight construction

Texture Black Powdercoat - Protects the assembly and gives a nice finished look

Rubber Bulb Gasket - Included with each kit for a perfect seal

100% Made in the USA - Right here in Minnesota!

This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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