2002-2007 WRX/STI

The IAG Performance Hand-Built Subaru EJ25 Long Block Engine Packages are a complete, valve cover to valve cover, crate engine. These engines offer...

The IAG Performance Hand-Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete, valve cover to valve cover, crate engine. These e...

The IAG Performance Hand-Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete, valve cover to valve cover, crate engine. These e...

The IAG Performance Hand-Built Subaru EJ25 Closed Deck Long Block Engine Packages are a complete, valve cover to valve cover, crate engine. These e...

The CNC Billet Aluminum EJ case seeks to change the Subaru performance tuning market by reinventing the EJ and addressing virtually every weakness ...

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 ...

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 ...

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 ...

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 ...

Stay Ahead Of Your Competition With The AMS Subaru WRX / STI Intake Manifold! The AMS Subaru Intake Manifold was designed to outperform the competi...

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

ID2600 XDS model Top-feed injector type Compact body Improved internal flow path increases output by 5% without sacrificing low flow performance D...

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 This is the GrimmSpeed Air Oil Separator. If you're familiar with modifying your vehicle, then you will know the importance of an air/o...

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

AEM’s X-Series Inline Wideband UEGO Air/Fuel Ratio Controllers are built upon unique, patented, 100% digital technology that makes them the fastest...

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

DESCRIPTION With the removal and re-installation of intakes, and due to external weather and under hood temperatures, the factory O ring on the MAF...

DESCRIPTION The OEM timing belt guides are thin, flimsy, and only have a small range of adjustment. The Faction Fab Timing Belt Guide is made of st...

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

BLCDOM2.5XTR3IN This is the Blouch Dominator 2.5XT-R 10cm2 Turbocharger. This is a ball-bearing turbocharger that is capable of supporting up to ab...

BLCDOM5.0 The Blouch Dominator 5.0XT-R 10cm2 Turbocharger is rated to 650 HP for those with a built engine, good tune, and the right supporting fue...

BLCDOM3.0XTR This is the Blouch Dominator 3.0 XTR 10cm2 Turbocharger for the 02-07 Subaru WRX and 04+ STI. This is a ball-bearing turbocharger that...

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...

BLCDOM2.5XTR8CM2 This is the Blouch Dominator 2.5 XT-R 8cm2 Turbocharger. This is a ball-bearing turbocharger that is capable of supporting up to 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...

Adjustable relief pressure and flow control makes fine-tuning on the fly simple and quick with the PERRIN BOV/BPV. HIGH FLOW With large 1.225" inle...

The PERRIN High Flow Washable Replacement Air Filter is the last filter you will ever need to buy. Not only is it washable, but it will increase ho...

Don't leave your turbo uncovered! Protect your intercooler from radiant heat from your turbo with the PERRIN Turbo Heat Shield!

Dress up your engine bay while preventing leaks and spills from your master cylinder reservoir with the PERRIN Brake Reservoir Cozy.  Easy Installa...

On this page, you are looking at the Tomei ARMS MX7760 Single Scroll Turbocharger. This is Tomei's latest design that features a new CNC billet com...

On this page, you are looking at the Tomei ARMS MX7960 Turbocharger. This is Tomei's latest design that features a new CNC billet compressor wheel....

This is the new Tomei BX-Series Ball-Bearing Turbocharger. The BX-Series is Tomei's latest ball-bearing turbocharger example that features the late...