2008-2014 STI Engine

The GrimmSpeed 1.3 Bar Radiator Cap delivers superior cooling system pressure management for your Subaru. Engineered to maintain a higher pressure ...

GrimmSpeed 89-22 Subaru All Models Bolt Oil Caps - Red/Black

Engineered specifically for the 08-14 Subaru Impreza WRX/STI, this GrimmSpeed Fender Shroud in striking red delivers both performance and aesthetic...

The GrimmSpeed Turbo Heat Shield Reflect-A Gold Foil provides superior thermal protection for your turbocharger system. Engineered with advanced re...

Secure your battery with precision using the GrimmSpeed Lightweight Battery Mount Kit designed specifically for 2008-2014 Subaru WRX STI models. Th...

Secure your battery with precision using the GrimmSpeed Lightweight Battery Mount Kit specifically engineered for 2008-2014 Subaru WRX STI models. ...

Engineered specifically for 2008-14 Subaru WRX and STI models, the GrimmSpeed Black Radiator Shroud with integrated tool tray delivers superior eng...

Engineered for precision performance, the GrimmSpeed 75A Street Transmission Mount delivers optimal rigidity for your Subaru STI or WRX manual tran...

Precision-engineered GrimmSpeed Gold Oil Caps deliver both functionality and style for your 1989-2022 Subaru. CNC-machined from billet aluminum wit...

GrimmSpeed 89-22 Subaru All Models Bolt Oil Caps - Red Precision-engineered GrimmSpeed V2 Bolt Oil Cap in vibrant red delivers superior sealing per...

Precision-engineered GrimmSpeed Oil Caps deliver superior sealing and durability for Subaru models from 1989-2022. CNC-machined from billet aluminu...

Engineered specifically for Subaru EJ (2002-2021) and WRX FA20 (2015-2021) models, the GrimmSpeed 75A Durometer Street Engine Mount delivers optima...

Engineered specifically for the 2008-2014 Subaru WRX/STI, the GrimmSpeed Strut Bar delivers measurable chassis rigidity improvements. This precisio...

Engineered specifically for the 2008-2014 Subaru WRX/STI, this GrimmSpeed Strut Bar in striking red delivers superior chassis rigidity and handling...

The original GrimmSpeed Fender Shrouds for the 15+ chassis were SUCH a big hit that Grimmspeed decided to introduce a unique set for 08-14 WRX and ...

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

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

How many times have you lost a wrench or socket in your engine bay? Yeah, that's what I thought, too many to count. Finally, after all of these yea...

These are the GrimmSpeed High Lift Hood Struts. These hood struts have been designed to provide the hood of your vehicle support while eliminating...

This is the GrimmSpeed Master Cylinder Brace. This master cylinder brace is the result of countless invested hours of research to solve a prevalen...

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