2015-2021 STI Engine

Feature-packed, these gaskets are a perfect fit for any engine build, from basic refresh to a high horsepower track monster.  The GrimmSpeed He...

Feature-packed, these gaskets are a perfect fit for any engine build, from basic refresh to a high horsepower track monster.    1.5mm thicknes...

The factory oil pickup is failure-prone and can lead to engine failure. What happens is that the tube will end up cracking, sometimes at the welds,...

This is the Killer B Motorsport Windage Tray. This tray has been designed to help reduce oil sloshing from one bank of the engine to the other unde...

This kit has been designed to work with the Torque Solution Top Feed Fuel Rails and utilizes the OEM hard lines on your Subaru. It is also supplied...

The PERRIN Performance Air Oil Separator traps oil from the crank case vents before it enters the intake, thus increasing intercooler efficiency an...

Here, you are looking at the ATP GTX3576R Bolt-On Turbocharger. This is a great option for those of you looking for a direct bolt-on turbocharger t...

Here, you are looking at the ATP GTX3576R Bolt-On Turbocharger. This is a great option for those of you looking for a direct bolt-on turbocharger t...

The ATP GEN 2 GTX3071R Bolt-On Turbocharger is one of ATP Turbo's latest designs for those of you looking for more muscle and will outflow your fac...

Boost your Subaru STi's performance with the Turbo XS FMIC. It provides enhanced air-flow, maximum cooling, and improved turbo response for your 20...

Turbo XS 15-16 Subaru WRX/STI Billet Aluminum Radiator Stay - Blue

The Killer B Motorsport V4 Performance Cast Oil pan is designed to reliably meet the demands of high-performance Subaru Engines used on street or t...

The OEM Subaru pitch stop brackets fail over time. Help prevent this failure with the PERRIN Pitch Stop Brace. DETAILS: THE PROBLEM WITH THE OEM ...

The PERRIN Performance transmission mount kit reduces drivetrain movement under hard acceleration, deceleration and cornering. Stiffer transmissio...

The Torque Solution Lightweight Crank Pulley has been designed to surpass the quality of the OEM crank pulley while adding more performance. The li...

The Torque Solution Pitch Stop Brace has been designed to reinforce the factory brackets that connect the pitch stop to the car. The OEM bracket is...

The DeatschWerks Top Feed 2200cc Fuel Injectors are available for those of you who need a high-flowing fuel injector to supplement those modificati...

Once you start adding go-fast performance upgrades that increase the power, torque, and boost, then you must upgrade your fuel system to supplement...

Once you start adding go-fast performance products that increase power, torque, and boost, then you have to start upgrading your fuel system to sup...

Once you start adding go-fast performance products that increase power, torque, and boost, then you have to start upgrading your fuel system to sup...