2002-2007 WRX/STI

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

DESCRIPTION The Invidia Up-Pipe is a high-performance upgrade for Subaru models, designed to replace the restrictive and failure-prone factory up-p...

DESCRIPTION The Invidia Up-Pipe - No EGT Bung is a premium upgrade for Subaru owners looking to improve exhaust flow and turbo efficiency. Designed...

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

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

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...

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

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...

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 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 Blue™ Compressor wheel - 73HTZ Flow rating - 57LB per minute CW Measurements - 52.6MM Inducer / 73MM E...

Upgrading the fuel system for your Subaru has never been easier. At the heart of our upgrade kit is an AEM ethanol-compatible fuel pump. We round...

EMISSIONS This part is in the process of external testing with the EO process ongoing. NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY EMISSION CO...

The COBB Subaru Pitch Stop Mount is constructed of CNC machined 6061-T6 aluminum and finished with black anodizing. The COBB logo is laser engrav...

DESCRIPTION This is the GrimmSpeed Top Mount Intercooler. Once you start performing modifications that add more horsepower and more boost, eventual...

This is the factory spark plug as installed in the 2018 Subaru WRX STI Type RA and 2019 Subaru WRX STI. The main differences are a heat range tha...

The IAG Unequal Length Headers are the perfect way to add more performance to your Subaru WRX STI and still keep the iconic "Boxer Rumble." The hea...

DESCRIPTION We designed this up pipe using our in-house FARO Arm along with the latest and greatest Solidworks CAD Software. This assures that we c...

DESCRIPTION The Subaru OEM Group N Pitch Stop Mount is designed to minimize drivetrain movement and improve power delivery. In performance driving,...

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 ...

DESCRIPTION Our Subaru Battery Tie Down is professionally designed in CAD and machined from quality billet aluminum. A black anodized finish and ...

EMISSIONS This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION Tired of your A...

BLCDOM1.5XT This is the Blouch Dominator 1.5XT-R 10CM2 Turbocharger. This is a ball-bearing turbocharger that can support up to about 480 horsepowe...

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

DESCRIPTION These are the Grimmspeed Head to Exhaust Manifold Dual Port Gaskets. These particular gaskets see some of the highest temperatures when...

DESCRIPTION Replace your missing or damaged up-pipe hardware with the same high-quality kit included in all GrimmSpeed Up-Pipes. Designed for durab...

DESCRIPTION Clean up that engine bay and show your GrimmSpeed pride with our newly-designed Subaru Battery Tiedown. Laser cut, then CNC bent and po...

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 ...