Engine Mods

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

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

Extreme Turbo Systems is proud to introduce the first intake for the 2022+ WRX platform.  Our intake system utilizes a stock size MAF housing that ...

DESCRIPTION The MSP Front Brace Bar is engineered to provide a bold, aggressive look and increased chassis rigidity for your 2015-2021 WRX/STI. It ...

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...

DESCRIPTION The main difference between our original cast turbo inlets and the new V2 is that there are no longer two different fitments for the 20...

DESCRIPTION The GrimSpeed Electronic Boost Control Solenoid is one of GrimmSpeed's most utilized upgrades due to the durability, simplicity of use,...

The importance of routine oil changesNo motor oil lasts forever. The heat and friction produced between the moving parts of any engine eventually c...

DESCRIPTION Add a little style to your hood struts by swapping them for these OLM Carbon Fiber Hood Struts. This piece offers the same OE style and...

This kit is designed to provide a way to data log and monitor the ethanol content of fuel on most new Subaru Vehicles. Our proprietary controller r...

The IAG Performance V3 Street Series Air / Oil separator (AOS) is an excellent investment to keep your Subaru vehicle running well. The Street Seri...

PLM Private Label Mfg. Power Driven Subaru EWG Up-Pipe with Dump Tube 38mm features a unique designed up pipe which gives you the option to install...

DESCRIPTION The GrimmSpeed Electronic Boost Control Solenoid is one of GrimmSpeed's most utilized upgrades due to the durability, simplicity of use...

DESCRIPTION The GrimmSpeed Top Mount Intercooler Charge Pipe Kit is a redesigned performance upgrade over the OEM plastic unit that is restrictive ...

DESCRIPTION The GrimmSpeed StealthBox Cold Air Intake System is the result of countless invested hours in research and development to provide the p...

The AirShields are constructed out of industrial grade CNC metal including the mesh itself for durability our signature honeycomb pattern. The fram...

The flow of air is not only limited to the outside of a car. To maximize cooling capabilities, a radiator needs a direct flow of air to allow an en...

NGK Laser Iridium spark plugs provide superior ignitability and long service life. Fine wire iridium tipped center electrode and fine wire platinum...

DESCRIPTION This is the GrimmSpeed Top Mount Intercooler. Once you start performing modifications that add more horsepower and more boost, eventual...

PRODUCT FEATURES Direct fit for 2022+ Subaru WRX Power gains of up to 13.3 HP and 16.6 lb-ft on stock tune Dyno-tested for safe air/fuel ratio...

The Hyper V-Core Series is the newest to the Koyorad | Koyo All Aluminum Racing Radiator line up. An engine's cooling system in many newer vehicles...

DESCRIPTION The GrimmSpeed Red StealthBox Cold Air Intake System is the result of countless invested hours in research and development to provide t...

6A1 540 A * Type 1 Aluminum Oval shape * Steel Blue Bracket Light weight aluminum oval shaft, strong & durable.

COMPLETE THE LOOK Matching Perrin's signature pulley cover design, the angled cutouts look great while concealing the factory fender gap.  DESIGN P...