Products

EMISSIONS SEMA Certified - SC for listed fitments CARB Certified - EO - #D-896-1 for listed fitments The Highest Quality, Built to Last! Over the ...

DESCRIPTION We know that many of you replace all of your exhaust gasket at the same time while installing aftermarket exhaust parts on your car. We...

DESCRIPTION At GrimmSpeed we have worked with endless amounts of aftermarket gaskets, none seem to work as well as the multi-layer steel OEM style ...

DESCRIPTION We know that many of you replace all of your exhaust gasket at the same time while installing aftermarket exhaust parts on your car. We...

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

DESCRIPTION At GrimmSpeed we have worked with endless amounts of aftermarket gaskets, none seem to work as well as the multi-layer steel OEM style ...

DESCRIPTION The GrimmSpeed Exhaust Manifold to Turbo Gasket for the 2022+ WRX is a premium OEM-style replacement designed to deliver superior seali...

DESCRIPTION GrimmSpeed™ OEM Style Gasket, better than OEM quality at an attractive price.At GrimmSpeed™ we have worked with endless amounts of afte...

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 GrimmSpeed Front Mount Intercooler Kit for the 2008–2014 STI is engineered to deliver maximum cooling efficiency with minimal press...

DESCRIPTION The GrimmSpeed Front Mount Intercooler Kit for the 2008–2014 WRX is engineered to deliver exceptional cooling efficiency without sacrif...

DESCRIPTION The GrimmSpeed Front Mount Intercooler Kit from GrimmSpeed has been designed with a great balance of low-pressure drop and high-tempera...

DESCRIPTION The GrimmSpeed Front Mount Intercooler Kit from GrimmSpeed has been designed with a great balance of low-pressure drop and high-tempera...

DESCRIPTION It’s inevitable, you’ll eventually want to replace your OEM Subaru oil cap. Whether it's leaking, worn out, or just an eyesore, the Gri...

DESCRIPTION The GrimmSpeed Head Gaskets feature a multi-layer steel (MLS) construction, in which multiple grades are used to provide optimal surfac...

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

DESCRIPTION Simplify your Hella Horn installation with the GrimmSpeed Hella Horn Harness for the 2022–2025 Subaru WRX. Designed specifically for th...

DESCRIPTION Upgrade the weak factory horn on your Subaru with the GrimmSpeed Hella Horn Kit for the 2015–2021 Subaru WRX and 2015–2021 Subaru STI. ...

DESCRIPTION Upgrade the weak factory horn on your Subaru with the GrimmSpeed Hella Horn Kit for the 2022–2026 Subaru WRX. This complete kit deliver...

DESCRIPTION Bring back the classic Subaru sound with the GrimmSpeed Hella Horn Kit for the 2022–2025 Subaru WRX. Designed specifically for the VB c...

DESCRIPTION Bring back the classic Subaru sound with the GrimmSpeed Hella Horn Kit for the 2022–2025 Subaru WRX. Designed specifically for the VB c...

DESCRIPTION The GrimmSpeed Hella Horn Wiring Harness is a simple, clean solution for wiring Hella horns on the 2008-2014 Subaru WRX and 2004-2014 S...

DESCRIPTION The GrimmSpeed Hella Horn Wiring Harness is a simple, plug-and-play solution designed specifically for the 2015-2021 Subaru WRX and 201...

DESCRIPTION Have you ever thought to yourself, "Man, Trent, you've got all of these awesome parts but how are you supposed to let your crew know yo...

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...

Tired of that ugly OEM hood prop blocking your view of that beautiful boxer engine? Always wanted to open your hood with just a couple fingers? Ann...

DESCRIPTION We all know how bad (and expensive!) the OEM Subaru Top Mount Intercooler Gaskets can be. They are one of the greatest source of leaks ...

DESCRIPTION The turbo studs on the FA turbo motors are notoriously difficult to deal with. If you're lucky enough to get the nuts off without drama...

These are one of the best ways to represent your favorite U.S. Aftermarket Parts Manufacturer. GrimmSpeed license plate frames are made from...

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

DESCRIPTION Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what ...