GrimmSpeed

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...

DESCRIPTION The GrimmSpeed Engine Bay Cap Set completely replaces the OEM yellow caps under the hood of all 2008-21 WRX and STI models, as well as ...

THE SHROUDS YOU DIDN'T KNOW YOU NEEDED! The original GrimmSpeed Fender Shrouds for the 15+ chassis were SUCH a big hit that we decided to introduce...

DESCRIPTION Do away with the flimsy, boring factory fabric shrouds and make your engine bay stand out with the brand new GrimmSpeed Fender Shrouds....

DESCRIPTION Engineered for real-world performance and durability, the GrimmSpeed Front Strut Bar adds critical front-end rigidity to your 2008–2014...

DESCRIPTION The GrimmSpeed Front Strut Bar for the 2015-2021 Subaru WRX/STI blends precision engineering with clean aesthetics to deliver serious p...

DESCRIPTION Lightweight Batteries are an excellent and inexpensive way to remove weight from your Subaru, which has an OEM battery tipping the scal...

IMPROVE ENGINE RESPONSE AND FASTER REV'S In our opinion, the OEM Subaru crank pulley has been a cause for concern ever since its original design. I...

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

ADD A TOUCH OF CLASS TO YOUR BAY! Some OE parts look passable and others miss the mark. In the case of the factory post MAF hose, the quicker you c...

DESCRIPTION This is the GrimmSpeed Post MAF Hose Kit. This hose kit has been designed to replace the OEM hose to increase the flow to improve the o...

DESCRIPTION Our Pulley Cover is precision laser cut and CNC bent from locally-sourced material and each cover receives a durable powdercoat finish....

DESCRIPTION This is the GrimmSpeed Radiator Hose Kit. These radiator hoses feature multi-layer silicone construction that is built to last while im...

Your Subaru’s cooling system is only as good as its weakest link, commonly that’s the old, dry-rotted OEM coolant hoses. As your Subaru ages and th...

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

METICULOUS ENGINEERING, UNPARALLELED CRAFTSMANSHIP GrimmSpeed Intercoolers have set the gold standard for how a high performance heat exchanger sho...

DESCRIPTION The GrimmSpeed Radiator Shroud for the 2015-2021 Subaru WRX/STI is made from CNC laser cut and bent aluminum and covered in a very dura...

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

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

ADAPT YOUR GRIMMSPEED 2008-2014 WRX FRONT MOUNT INTERCOOLER FOR USE WITH "STI-STYLE" OEM OR AFTERMARKET TURBOCHARGERS Looking to upgrade to new tur...

ADAPT YOUR GRIMMSPEED 08-14 WRX TOP MOUNT INTERCOOLER FOR USE WITH "STI STYLE" OEM OR AFTERMARKET TURBOCHARGERS! Looking to upgrade to new turbo op...

DESCRIPTION The GrimmSpeed Stubby Knobs are for car enthusiasts that prefer a shift knob that's on the short and fat side, based off the design of ...

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

EMISSIONS CARB Certified - EO - #D-896-4 & #D-896-2 for listed fitments The bar has been raised. So, you probably already know that you want a...

EMISSIONS CARB Certified - EO - #D-896-4 & #D-896-2 for listed fitments Meticulous Engineering Meets Unparalleled Craftsmanship You probably a...

EMISSIONS CARB Certified - EO - #D-896-4 & #D-896-2 for listed fitments Meticulous Engineering, Unparalleled Craftsmanship Replace that unders...