2004-2007 Subaru STI Engine

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

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

DESCRIPTION The Chase JB400 Turbo is the smaller of our two offerings, this journal bearing unit is a perfect bolt-on to any stage 3 car. The Chase...

Here are the details: 1050Xcc Injector model Compact body Improved internal flow path increases output by 5% without sacrificing low flow performan...

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

1300cc injector size Top-feed type Designed in partnership with Bosch Motorsport Designed to work with alternative fuels All stainless internals C...

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

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 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...

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...

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...

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 ...

PLM Power Driven Subaru 44mm EWG Up-Pipe with Dump Tube features a unique designed Up-pipe which gives you the option to install a 44mm or 45mm ext...

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...

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

DESCRIPTION We all know how bad (and expensive!) the OEM Subaru Top Mount Intercooler Gaskets can be. They are one of the greatest source of leaks ...

The Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX/STI when perfect aesthetics ...

DESCRIPTION The Faction Fab Billet Aluminum Pitch Stop features a unique design that eliminates front to back engine movement while eliminating the...

Oil supply line and gasket set included! FP Blue™ Compressor wheel - 73HTZ Flow rating - 57LB per minute CW Measurements - 52.6MM Inducer / 73MM E...

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

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

DESCRIPTION The COBB Tuning Stainless Steel Heat Shield is an attractive direct replacement for the unsightly factory piece. This turbo heat shie...

This kit is designed to be the best AOS on the market. It is a triple pass system with carefully designed diameters and cross sect...

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 ...

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...

BLCDOM1.5XT8CM2 This is the Blouch Dominator 1.5XT-R 8CM2 Turbocharger. This is a ball-bearing turbocharger that is capable of supporting up to abo...