Subaru STI Engine Parts

Formulated for long-lasting corrosion and rust protection for all cooling system components, this prediluted antifreeze/engine coolant prevents the...

DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...

The Motul 8100 X-Cess Gen2 5W-40 Engine Oil Change Kit is an easy, convenient solution for engine oil changes! It comes with everything you need fo...

DESCRIPTION The GrimmSpeed Dry-Con Air Filter is a high-performance direct-OEM replacement panel filter that has been designed to flow more air whi...

DESCRIPTION The GrimmSpeed Electronic Boost Control Solenoid is one of GrimmSpeed's most utilized upgrades due to the durability, simplicity of use...

This kit is designed to provide a way to data log and monitor the ethanol content of fuel on most new Subaru Vehicles. Our proprietary controller r...

PLM Private Label Mfg. Power Driven Subaru EWG Up-Pipe with Dump Tube 38mm features a unique designed up pipe which gives you the option to install...

DESCRIPTION GrimmSpeed believes that there has not been any major changes to the unequal exhaust manifold in some time, and this is due to the tigh...

DESCRIPTION The GrimmSpeed Ceramic Coated 2 Bolt Up-Pipe has been designed to be a high-performance direct replacement for your factory up-pipe to ...

DESCRIPTION Add a little style to your hood struts by swapping them for these OLM Carbon Fiber Hood Struts. This piece offers the same OE style and...

DESCRIPTION The biggest issue with the OEM struts that they prevent your hood from opening far enough to allow adequate space for working and light...

DESCRIPTION If you’re going flex fuel, turning up boost, or upgrading to a turbo that actually needs fuel, the Injector Dynamics ID1050-XDS Top Fee...

DESCRIPTION The Injector Dynamics ID1300-XDS fuel injectors are a high-performance, top-feed injector set built for serious Subaru builds running h...

NGK single iridium plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consis...

DESCRIPTION The Grimmspeed Top Mount Intercooler Y-Pipe Kit has been designed to work with factory or aftermarket top mount intercoolers. This is a...

DESCRIPTION GrimmSpeed's new Overtake BB500 Turbocharger is another powerful turbocharger designed by GrimmSpeed. The Overtake Ball-Bearing 500-Ser...

DESCRIPTION Here, you are looking at the GrimmSpeed Lightweight Battery Tiedown. This is a great way to improve the looks and aesthetics of your en...

Tired of heat soak? We don't blame you!   It's time to upgrade to an intercooler that is designed specifically for the 2015+ WRX with performance i...

DESCRIPTION We know that many of you replace all of your exhaust gasket at the same time while installing aftermarket exhaust parts on your car. We...

Oil Supply Line and gasket set included! FP Green HTZ Compressor wheel - 76HTZ Flow rating - 61LB per minute CW Measurements - 54.8MM Inducer / 76...

DESCRIPTION The GrimmSpeed Radiator Shroud has been designed to improve the overall cooling efficiency of your vehicle by channeling the incoming a...

Emissions 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the ...

EMISSIONS 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the ...