Engine & Performance

Racing Radiator FMIC.Pro Subaru WRX X-Core 2008-2014/STI 08-15 FMIC.Pro X-Core series water cooler is a professional product providing effective co...

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 ...

Increase efficiency, style, and power potential under your hood. PERRIN Intake systems use proper MAF alignment and plumbing size, both of which ar...

The Mishimoto racing thermostat for the Subaru WRX 2001–2014 / STI 2001–2016 will promote greater cooling efficiency throughout your engine. The Mi...

When properly maintained, the Subaru flat-four is well known for its substantial power and impressive reliability. Proper regulation of coolant tem...

Subaru Impreza WRX and STI Performance Aluminum Radiator, 2001-2007  The Mishimoto performance aluminum radiator for the Subaru WRX and STI is des...

The Mishimoto performance aluminum radiator for the WRX and STI is designed and engineered to maximize cooling efficiency by up to 30%, boost engin...

EJ25 - PLATINUM SERIES TURBO TUFF PISTONS The best aftermarket Subaru piston company just got even better with our new Turbo Tuff lineup tar...

Manley Pro Series connecting rods are forged from aircraft quality 4340 vacuum degassed material. Each rod is fully machined in the Manley Lakewoo...

The MAHLE PowerPak is a complete, race proven piston assembly kit composed of hand deburred, forged, performance coated pistons, high quality stee...

Easy to install. Affordable. Reliable.  G4X PlugIn ECUs offer the latest in engine management technology, designed to easily maximize the potential...

WRXLINK (04) - #WRX104+WRXLink (04) - #WRX104+ The Link G4+ WRXLink (04) WRX104+ PlugIn fits the Subaru WRX & STI V10 04-06. The ECU PCB fits d...

WRXLINK (3-4) - #WRX4+WRXLink (3-4) - #WRX4+ Free yourself from the constraints of the factory ECU The Link G4+ WRXLink (3-4) WRX4+ PlugIn fits the...

WRXLINK (5-6) - #WRX6+WRXLink (5-6) - #WRX6+ Free yourself from the constraints of the factory ECU The Link G4+ WRXLink (5-6) WRX6+ PlugIn fits the...

SUBARU EJ257 TIME ATTACK "FSR" SUBARU 2004+ IMPREZA STI , 2005+ FORESTER XT, LEGACY GT, 2006+ WRX EJ257 Time Attack FSR Pistons now available! 261...

 SUBARU EJ257 TIME ATTACK "FSR" SUBARU 2004+ IMPREZA STI , 2005+ FORESTER XT, LEGACY GT, 2006+ WRX EJ257 Time Attack FSR Pistons now available! 26...

Dedicated Intercooler FMIC.Pro is the latest product from our professional line of tuning air coolers. Its exceptional performance is due to its un...

Dedicated Intercooler FMIC.Pro is the latest product from our professional line of tuning air coolers. Its exceptional performance is due to its un...

Dedicated Intercooler FMIC.Pro is the latest product from our professional line of tuning air coolers. Its exceptional performance is due to its un...

Dedicated Intercooler FMIC.Pro is the latest product from our professional line of tuning air coolers. Its exceptional performance is due to its un...

The ID1700x is the most recent offering from the partnership of Injector Dynamics and Bosch Motorsport. The ID1700x was designed to fill the gap be...

The ID1700x is the most recent offering from the partnership of Injector Dynamics and Bosch Motorsport. The ID1700x was designed to fill the gap be...

The ID1700x is the most recent offering from the partnership of Injector Dynamics and Bosch Motorsport. The ID1700x was designed to fill the gap be...