2015-2021 Subaru STI Engine

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 ...

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...

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

When a car equipped with a McPherson Strut suspension system, like the 2015 Subaru WRX 2.0L or WRX STi 2.5L, is being driven through a turn there i...

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 OLM LE Dry Carbon Fiber Belt Cover, imported from Japan, exemplifies this commitment to quality craftsmanship. Axis Parts meti...

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...

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...

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...

On this page, you are looking at the Tomei ARMS MX8265 Single Scroll Turbocharger. This is Tomei's latest design that features a new CNC billet com...

These are the Injector Dynamics 1700cc Fuel Injectors and are an excellent option for the 02-14 Subaru WRX and 07+ STI that needs to supplement the...

DESCRIPTION The GrimmSpeed Stage 1 Power Package combines GrimmSpeed's Cold Air Intake System, as well as the GrimmSpeed 3-Port Electronic Boost Co...