2015-2021 Subaru STI

The South Bend Stage 4 Extreme Clutch Kit has been designed for those of you with moderate upgrades and who need the right disc and pressure plate ...

AEM's X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge (PN 30-0334) provides tuners who are using piggyback tuning modules or open source s...

AEM’s 30-0307 X-Series 150 PSI/10 BAR Digital Oil Pressure gauge combines incredible looks, increased readability and a multitude of new, easy-to-u...

AEM’s 30-0301 X-Series 100 PSI/7 BAR Digital Oil/Fuel Pressure gauge combines incredible looks, increased readability and a multitude of new, easy-...

AEM Digital Oil Pressure Gauges combine unsurpassed accuracy, speed and control with an easy-to-read digital LED interface that displays oil pressu...

THE AEM WATER/METHANOL INJECTION SYSTEM ADVANTAGEWater/methanol injection for forced induction (turbocharged or supercharged) gas-powered race engi...

AEM’s 340LPH E85-Compatible High Flow In-Tank Fuel Pumps feature robust internal construction that is designed to withstand the low lubricity chara...

AEM's Digital Boost Display Gauges combine unsurpassed accuracy, speed and control with an easy-to-read digital LED interface that displays boost i...

AEM’s legendary Digital Wideband O2 AFR UEGO Gauge is a wideband UEGO air/fuel ratio controller (AFR) and gauge in one. It unites accuracy, speed a...

AEM's High Cap Universal Adjustable Fuel Pressure Regulator (PN 25-305BK) is the perfect solution for racers who need reliable fuel pressure in hig...

AEM’s 340LPH E85-Compatible High Flow In-Tank Fuel Pumps feature robust internal construction that is designed to withstand the low lubricity chara...

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

CD-7LG CARBON DIGITAL DASH DISPLAY SPECS: Full color 7" screen with 800x480 resolution Direct sunlight readable (1000cd/m2 brightness and anti-gla...

To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra traction and control in the front of a car. By creatin...

To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra traction and control in the front of a car. By creatin...

***Only fits with APR Performance Front Air Dam*** To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra tra...

To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra traction and control in the front of a car. By creatin...

To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra traction and control in the front of a car. By creatin...

***Only fits with APR Performance Front Air Dam*** To combat the effects of front end lift, APR Front Wind Splitters are utilized to give extra tra...

Spanning 48 inches and a height of 10 inches, the SCCA GTC-200 adjustable wing offers the perfect amount of downforce for midsize and compact cars....

Spanning 60.5 inches and a height of 10 inches, the New GTC-200 adjustable wing offers the perfect amount of downforce for midsize and compact cars...

With a height of 5 inches, the GTC-200 Drag wing is designed for cars with low profile roof lines or for those Looking to reduce drag yet maintain ...

Excessive heat can cause major and expensive damage to critical components in a car. Engine bays, radiators, brakes, transmissions, and differentia...