2015–2021 Subaru WRX Mods

DESCRIPTION The GrimmSpeed Fender Shrouds have been designed to fill in the unsightly factory gap between the insides of your front fenders, and th...

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

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

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 Thie GrimmSpeed Red Post-MAF Hose kit has been designed to replace the OEM hose to increase the flow to improve the overall power and r...

DESCRIPTION The GrimmSpeed Charge Pipe Kit replaces the restrictive stock plastic unit on the FA20-powered WRX with larger diameter CNC mandrel ben...

DESCRIPTION This is the GrimmSpeed Pitch Stop Mount. This pitch stop mount is a dramatic improvement over the factory mount which is made from flex...

DESCRIPTION The GrimmSpeed Race Version Pitch Stop Mount And Bushing Kit is a pivotal component in the engine/drivetrain support department especia...

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

DESCRIPTION Here, you are looking at the GrimmSpeed Lightweight Battery Tiedown. This is a great way to improve the looks and aesthetics of your en...

DESCRIPTION The GrimmSpeed Raw Stainless Steel Classic Shift Knob is a great way to add looks and styling to the interior of your vehicle while pro...

DESCRIPTION The GrimmSpeed Delrin Classic Shift Knob is a great way to add modern looks and styling to the interior of your vehicle while providing...

DESCRIPTION The standard GrimmSpeed Shift Knob is one of the most popular in the Subaru aftermarket for a reason. They are the perfect mixture of r...

DESCRIPTION The GrimmSpeed Lightweight Delrin Tallboy Shift Knob is a great way to add modern looks and styling to the interior of your vehicle whi...

DESCRIPTION The GrimmSpeed Black Tallboy Shift Knobs are for car enthusiasts that prefer a shift knob that's on the tall and skinny side, based off...

DESCRIPTION The GrimmSpeed Red Tallboy Shift Knob is a great way to add modern looks and styling to the interior of your vehicle while providing th...

DESCRIPTION The GrimmSpeed Raw Stainless Steel Stubby Shift Knob is a great way to add looks and styling to the interior of your vehicle while prov...

DESCRIPTION The GrimmSpeed Lightweight Delrin Stubby Shift Knob is a great way to add modern looks and styling to the interior of your vehicle whil...

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 Red Stubby Shift Knob is a great way to add modern looks and styling to the interior of your vehicle while providing the...

DESCRIPTION Aftermarket exhaust systems are often larger in diameter than factory systems. As a result, they have a tighter fit below your car. Wit...

DESCRIPTION Aftermarket exhaust systems are often larger in diameter than factory systems. As a result, they have a tighter fit below your car. Wit...

DESCRIPTION The biggest issue with the OEM struts that they prevent your hood from opening far enough to allow adequate space for working and light...

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

DESCRIPTION Exhaust leaks seem to be an all-too-common issue with most modded Subarus. The most guaranteed leak you will get is if you run an after...

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

DESCRIPTION These are the Grimmspeed Head to Exhaust Manifold Dual Port Gaskets. These particular gaskets see some of the highest temperatures when...

DESCRIPTION The Grimmspeed OEM Downpipe To 3-Inch Cat-Back Adapter is very popular for those of you who are retaining the stock downpipe and need t...

DESCRIPTION Tired of the endless searching for a 3" 2 Bolt premium gasket that doesn't blow out? Most aftermarket Subaru exhaust systems need a 3" ...

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

DESCRIPTION Tired of the endless searching for a 3" 2 Bolt premium gasket that doesn't blow out? Most aftermarket Subaru exhaust systems need a 3" ...

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

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

DESCRIPTION One of the biggest complaints we’ve heard from 2015-21 WRX owners has to do with cracks forming in their OEM plastic turbo inlets from ...