Products
GrimmSpeed Resonated Catback 2011-2021 WRX/STI
DESCRIPTION The GrimmSpeed Cat-Back Exhaust System has combined premium materials, along with a larger piping diameter and smooth bends to provide ...
View full detailsGrimmSpeed Stage 1 Power Package 2008-2014 WRX
DESCRIPTION The GrimmSpeed Stage 1 Power Package combines GrimmSpeed's Cold Air Intake System, as well as the GrimmSpeed 3-Port Electronic Boost Co...
View full detailsGrimmSpeed Stage 1 Power Package 2015-2021 STI
DESCRIPTION The GrimmSpeed Stage 1 Power Package combines GrimmSpeed's Cold Air Intake System, as well as the GrimmSpeed 3-Port Electronic Boost Co...
View full detailsGrimmSpeed Stage 1 Power Package 2015-2021 WRX
DESCRIPTION The GrimmSpeed Stage 1 Power Package combines GrimmSpeed's Cold Air Intake System, as well as the GrimmSpeed 3-Port Electronic Boost Co...
View full detailsGrimmSpeed Stealthbox Intake 2015-2021 STI
DESCRIPTION The GrimmSpeed StealthBox Cold Air Intake System is the result of countless invested hours in research and development to provide the p...
View full detailsGrimmSpeed Stock Downpipe to Aftermarket 3" Catback Adapter
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...
View full detailsGrimmSpeed Street Pitch Stop Mount 2002+ WRX / 2004-2021 STI
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...
View full detailsGrimmSpeed Street Transmission Mount 2002+ WRX / 2004-2021 STI
The ALL NEW GrimmSpeed Transmission Mounts are designed to lock down your Subaru's drivetrain and enhance the driving experience, while keeping cab...
View full detailsGrimmSpeed TGV to Engine Gasket (Pair) 2002-2014 WRX/ 2004-2021 STI
DESCRIPTION These are the GrimmSpeed TGV to Engine Gaskets. If you need to replace your OEM gaskets, then the GrimmSpeed units make for a quality r...
View full detailsGrimmSpeed Top Mount Intercooler Aluminum Y-Pipe Kit 2004-2021 STI
DESCRIPTION The Grimmspeed Top Mount Intercooler Y-Pipe Kit has been designed to work with factory or aftermarket top mount intercoolers. This is a...
View full detailsGrimmSpeed Top Mount Intercooler Kit 2002-2007 WRX / 2004-2021 STI
DESCRIPTION This is the GrimmSpeed Top Mount Intercooler. Once you start performing modifications that add more horsepower and more boost, eventual...
View full detailsGrimmSpeed Top Mount Intercooler Kit 2015-2021 WRX
DESCRIPTION This is the GrimmSpeed Top Mount Intercooler. Once you start performing modifications that add more horsepower and more boost, eventual...
View full detailsGrimmSpeed Top Mount Intercooler Splitter 2015-2021 STI
DESCRIPTION This is the Grimmspeed Splitter that is available for separate purchase. This particular splitter comes with the Grimmspeed Top Mount I...
View full detailsGrimmSpeed Turbo to Downpipe Gasket 2004-2021 STI/ 2002-2014 WRX
DESCRIPTION The GrimmSpeed Turbo To Downpipe Gasket is made using a premium multi-layer steel with a stainless steel fire-ring, this gasket surpass...
View full detailsGrimmspeed Turbo to J-Pipe Gasket 2015-2021 WRX
DESCRIPTION The Grimmspeed Turbo to J-Pipe Gasket is a multi-layer stainless steel gasket designed to provide an optimal seal between the turbochar...
View full detailsGrimmSpeed Un-Resonated Catback 2011-2021 WRX/STI
DESCRIPTION The GrimmSpeed Cat-Back Exhaust System has combined premium materials, along with a larger piping diameter and smooth bends to provide ...
View full detailsGrimmSpeed UnEqual Length Header 2002-2014 WRX/ 2004-2021 STI
DESCRIPTION GrimmSpeed believes that there has not been any major changes to the unequal exhaust manifold in some time, and this is due to the tigh...
View full detailsGrimmSpeed V1 Cast Aluminum Turbo Inlet 2015-2021 WRX
Don't risk cracking your OE plastic inlet. One of the biggest complaints we’ve heard from 2015-21 WRX owners has to do with cracks forming in their...
View full detailsGrimmSpeed V2 Bypass Valve 2004-2021 STI / 2002-2007 WRX
DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...
View full detailsGrimmSpeed V2 Bypass Valve 2008-2014 WRX
DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...
View full detailsGrimmSpeed V2 Bypass Valve 2015-2021 WRX
DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...
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