2015-2021 STI

Engineered for durability and longevity, the GrimmSpeed OEM Downpipe to 3in Cat Back Adapter Subaru Turbo Models allows you to quickly and securel...

Opens Hood 30% Farther Than OEM - Better access and light for working Perfect Hood Balance - Struts are optimized for VA/VB hood size and weigh...

This is the Grimmspeed License Plate Relocation Kit. The main purpose of these is to position the license plate to the OEM tow hook provision. The ...

GrimmSpeed 08+ STi Boost Control Solenoid

GrimmSpeed's 3in Downpipe to Stock Cat-Back Adapter for Turbo Models offers superior fitment for Subaru vehicles. This adapter is manufactured and ...

Clean up that engine bay and show your GrimmSpeed pride with our newly-designed Subaru Battery Tiedown. Laser cut, then CNC bent and powdercoated w...

GrimmSpeed 02+ WRX/STi V2 Turbo Heat Shield - Black Ceramic Coating

GrimmSpeed 08-18 Subaru WRX/STI Lightweight Battery Tie Down - Red

GrimmSpeed 15+ Subaru WRX/STI Fender Shroud - Neon Green Powdercoat provides a stylish addition and is designed to be compatible with other GrimmSp...

GrimmSpeed 15+ Subaru WRX/STI Radiator Shroud - Black improves cooling and adds style to engine bay.

GrimmSpeed 15+ Subaru WRX/STI Radiator Shroud - Red enhances engine bay aesthetics and increases cooling performance.

GrimmSpeed 15+ Subaru WRX/STI Radiator Shroud - Neon Green Powdercoat adds aesthetically-pleasing style to the engine bay and enhances cooling effi...

GrimmSpeed 2015-2021 Subaru WRX/STI Fender Shrouds boast a stylish red powder-coat finish, blending in perfectly with other GrimmSpeed items. Craft...

The GrimmSpeed 2015+ WRX/STI Hella Horn Wiring Harness features a superiorly molded plug for effortless installation of Hella horns. Additionally,...

GrimmSpeed Fender Shrouds for the 2015+ WRX/STI are designed to replace the standard, dull factory fabric shrouds. Manufactured from a single piece...

The GrimmSpeed direct replacement air filter is a high-quality and easy-to-install upgrade for the stock airbox. It offers improved performance, i...

This is the Grimmspeed License Plate Relocation Kit. The main purpose of these is to position the license plate to the OEM tow hook provision. The ...

This is the GrimmSpeed StealthBox Cold Air Intake System. This performance cold air intake system is the result of countless invested hours in rese...

Feature-packed, these gaskets are a perfect fit for any engine build, from basic refresh to a high horsepower track monster.    1.5mm thicknes...

Feature-packed, these gaskets are a perfect fit for any engine build, from basic refresh to a high horsepower track monster.  The GrimmSpeed He...

The GrimmSpeed Radiator Hose Kit feature multi-layer silicone construction that is built to last while improving the overall cooling efficiency of ...