2015-2021 Subaru STI Cooling

Formulated for long-lasting corrosion and rust protection for all cooling system components, this prediluted antifreeze/engine coolant prevents the...

DESCRIPTION The Grimmspeed Top Mount Intercooler Y-Pipe Kit has been designed to work with factory or aftermarket top mount intercoolers. This is a...

Tired of heat soak? We don't blame you!   It's time to upgrade to an intercooler that is designed specifically for the 2015+ WRX with performance i...

DESCRIPTION The GrimmSpeed Front Mount Intercooler Kit from GrimmSpeed has been designed with a great balance of low-pressure drop and high-tempera...

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 ...

EMISSIONS This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION The OEM Coolant...

EMISSIONS This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION Replace your ol...

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 ...

Best TMIC on the market! Extreme Turbo Systems has designed a direct bolt on top mount intercooler for the 08-21 Subaru STI. This intercooler featu...

DESCRIPTION To help keep chassis deflection at bay and to keep any large dents out of your front fascia we’re offering the GrimmSpeed Bumper Bar as...

DESCRIPTION This is the Grimmspeed Splitter that is available for separate purchase. This particular splitter comes with the Grimmspeed Top Mount I...

This is handmade here in the USA at Extreme Turbo Systems. This will bolt up with a 3.0"-4.0" ETS intercooler and requires no additional trimming o...

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 ...

This piping kit is the best on the market for relocating the factory Subaru intercooler. The factory intercooler location allows for excessive heat...

This piping kit is the best on the market for relocating the factory Subaru intercooler. The factory intercooler location allows for excessive heat...

DESCRIPTION Remove the overworked factory intercooler from your 2015+ STI in favor of the Black COBB Front Mount Intercooler Kit. Featuring a ...

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results...

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 ...

This piping kit is used to convert your stock turbo ETS FMIC kit to work with the ETS rotated turbo kit. This kit won't work on any o...