Engine Mods

AG PTFE FUEL SYSTEM KIT W/ AEROMOTIVE FPR, IAG FUEL RAILS FOR 08-14 WRX, 08-21 STI FUEL DELIVERY MADE EASY When designing the IA...

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 This kit is designed to help increase the cooling to the #4 cylinder on the Subaru EJ series engines. This hose kit connects to an exis...

DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...

DESCRIPTION The Subaru Group N Engine Mount Set is designed to enhance the connection between your engine and chassis, delivering a more precise an...

The Best Intercooler for the 2022+ WRX ETS was the first to offer a front mount intercooler for the 2022+ WRX, setting the benchmark for performanc...

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

DESCRIPTION GrimmSpeed’s Engine Bay Shrouds have been a favorite amongst Subaru Enthusiasts for nearly a decade due to their minimal design and pai...

DESCRIPTION We decided on a subtle design for this cover that mimics the “vent” styling on our matching GrimmSpeed Alternator Cover. Is it made fro...

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

DESCRIPTION The GrimmSpeed Red Lightweight Crank Pulley reduces the rotational mass of the system, allowing your engine to accelerate and decelerat...

Description The Redline Fuse Gloss Cover Kit includes both of our fuse covers, one for the larger fuse box on the driver's side and a smaller for t...

Emissions 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with th...

Emissions 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the ...

Presenting the newest ETS stock replacement manifold, meticulously crafted for the 2022 and later Subaru WRX models equipped with the FA24 engine. ...

Compressive Tuning Intercooler Guard 2022+ WRX Introducing AirShields by Compressive Tuning – the ultimate combination of durability, fu...

This kit is designed to be the best AOS on the market. It is a triple pass system with carefully designed diameters and cross sect...

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...

Disclaimer: Photos are for illustrative purposes only, the actual product may differ slightly. DESCRIPTION The Blouch Dominator 1.5XT-R Ball Bearin...

DESCRIPTION The GrimmSpeed Dry-Con Air Filter is a high-performance direct-OEM replacement panel filter that has been designed to flow more air whi...

Emissions 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with th...

FACTORY FIT WITH A CUSTOM LOOK Get rid of the bright yellow factory dipstick and transform your Subaru’s engine bay with the IAG Subaru Dipst...

THE IAG SPEC HIGH-PRESSURE FUEL PUMP BY NOSTRUM IAG Performance and Nostrum have teamed up to deliver the IAG Spec High-Pressure Fuel Pump by...

THE IAG SPEC HIGH-FLOW DIRECT FUEL INJECTOR SET BY NOSTRUM IAG Performance and Nostrum have joined forces to develop the IAG Spec High-Flow D...

DESCRIPTION Taking a fresh approach formed from years of motorsport and component design experience, Process West proudly introduces the Verti-Cool...

Features Unmatched Air Filtration: Enjoy the largest air filter available for the '22+ WRX in our intake, ensuring top-notch airflow and filtrati...

Description This replacement filter can be used for the following intake system.Subaru Redline Carbon Fiber Intake 2015-2020 STI Why? The...

DESCRIPTION The GrimmSpeed Black Radiator Hose Kit was manufactured using a 5-ply construction system with fiber reinforcement between each layer ...

DESCRIPTION We know that many of you replace all of your exhaust gasket at the same time while installing aftermarket exhaust parts on your car. We...