GrimmSpeed

 Justin Grimm developed a passion for Subaru vehicles in 2002. He enjoyed taking them apart and improving their performance. After a few years of enjoying his passion for Subarus, he decided to make a career out of it. After realizing the niche market for aftermarket performance products, he founded GrimmSpeed out of his garage. He then later opened up his shop in St. Paul, MN where today the company produces innovative products for other nationwide Subaru enthusiasts.

Product wishlist
GrimmSpeed Front Mount Intercooler Kit 2015+ Subaru STI
GrimmSpeed Front Mount Intercooler Kit 2015+ Subaru STI
Out of stock
This is the GrimmSpeed Front Mount Intercooler Kit. This is the latest offering from GrimmSpeed and has been...
Grimmspeed Black Radiator Shroud for 2015+ Subaru WRX/STI
Grimmspeed Black Radiator Shroud for 2015+ Subaru WRX/STI
$89.00
Spruce up your engine bay and make it stand out! At GrimmSpeed we pride ourselves in the design...
GrimmSpeed Red Cold Air Intake For 2002-2007 WRX/STI / 2004-2008 Forester XT
GrimmSpeed Red Cold Air Intake For 2002-2007 WRX/STI / 2004-2008 Forester XT
$349.00
It’s no secret that GrimmSpeed intakes feature performance and aesthetics that lead the pack. With years of design theories...
GrimmSpeed Black Cold Air Intake For 2002-2007 WRX/STI / 2004-2008 Forester XT
GrimmSpeed Black Cold Air Intake For 2002-2007 WRX/STI / 2004-2008 Forester XT
Out of stock
It’s no secret that GrimmSpeed intakes feature performance and aesthetics that lead the pack.  With years of design theories...
GrimmSpeed Unresonated Catback Exhaust System For 2011-2014 WRX / 2008-2014 STI Hatchback
GrimmSpeed Unresonated Catback Exhaust System For 2011-2014 WRX / 2008-2014 STI Hatchback
$1,443.00
With so many catback exhaust options available, our goal was to create a unique, refined sound in an extremely...
GrimmSpeed Master Cylinder Brace for 2003-2006 Evo 8/9
GrimmSpeed Master Cylinder Brace for 2003-2006 Evo 8/9
$99.00
Improve pedal feel and braking capabilities! Most Bracket Mounting Points Available!(4 strut tower mounting points) Fits EVO 8/9...
GrimmSpeed Boost Control Solenoid For Mitsubishi Evolution X
GrimmSpeed Boost Control Solenoid For Mitsubishi Evolution X
Out of stock
The Most COMPLETE EVO BCS Ever Built, Period. The GrimmSpeed™ Mitsubishi EVO Boost Control Solenoid is designed to work with...
Grimmspeed Top Mount Intercooler Splitter For 2015+ STI
Grimmspeed Top Mount Intercooler Splitter For 2015+ STI
$229.00
OEM Splitter choking your TMIC? Fix that. These have both been a long time in the making and...
GrimmSpeed License Plate Relocation Kit for Hyundai Genesis Coupe
GrimmSpeed License Plate Relocation Kit for Hyundai Genesis Coupe
$79.00
Improve style and Increase Flow! Most adjustability available on the market! Mounts in OEM tow hook location(No cutting...
GrimmSpeed Black Ceramic Exhaust Manifold Crosspipe For 2006-2007 WRX / 2004-2008 FXT
GrimmSpeed Black Ceramic Exhaust Manifold Crosspipe For 2006-2007 WRX / 2004-2008 FXT
Out of stock
1/2"+ Thick Flanges, 14 Gauge Tubing, TRIPLE Layer Flex Joint. We are DURABILITY. Up until now all of you...
GrimmSpeed Exhaust Manifold Crosspipe For 2002-2005 WRX / 2008-2014 WRX / 2004+ STI / 2005-2009 LGT
GrimmSpeed Exhaust Manifold Crosspipe For 2002-2005 WRX / 2008-2014 WRX / 2004+ STI / 2005-2009 LGT
Out of stock
1/2"+ Thick Flanges, 14 Gauge Tubing, TRIPLE Layer Flex Joint. We are DURABILITY. Subaru supplies its turbo owners with a...
GrimmSpeed License Plate Relocation Kit For 2015+ WRX/STI
GrimmSpeed License Plate Relocation Kit For 2015+ WRX/STI
$79.00
Improve style and Increase Flow! Most adjustability available on the market! Mounts in OEM tow hook location (No cutting...
GrimmSpeed Front Mount Intercooler Kit 2015+ Subaru STI
GrimmSpeed Front Mount Intercooler Kit 2015+ Subaru STI
Out of stock
Grimmspeed Black Radiator Shroud for 2015+ Subaru WRX/STI
Grimmspeed Black Radiator Shroud for 2015+ Subaru WRX/STI
$89.00
GrimmSpeed Red Cold Air Intake For 2002-2007 WRX/STI / 2004-2008 Forester XT
GrimmSpeed Red Cold Air Intake For 2002-2007 WRX/STI / 2004-2008 Forester XT
$349.00
GrimmSpeed Black Cold Air Intake For 2002-2007 WRX/STI / 2004-2008 Forester XT
GrimmSpeed Black Cold Air Intake For 2002-2007 WRX/STI / 2004-2008 Forester XT
Out of stock
GrimmSpeed Unresonated Catback Exhaust System For 2011-2014 WRX / 2008-2014 STI Hatchback
GrimmSpeed Unresonated Catback Exhaust System For 2011-2014 WRX / 2008-2014 STI Hatchback
$1,443.00
GrimmSpeed Master Cylinder Brace for 2003-2006 Evo 8/9
GrimmSpeed Master Cylinder Brace for 2003-2006 Evo 8/9
$99.00
GrimmSpeed Boost Control Solenoid For Mitsubishi Evolution X
GrimmSpeed Boost Control Solenoid For Mitsubishi Evolution X
Out of stock
Grimmspeed Top Mount Intercooler Splitter For 2015+ STI
Grimmspeed Top Mount Intercooler Splitter For 2015+ STI
$229.00
GrimmSpeed License Plate Relocation Kit for Hyundai Genesis Coupe
GrimmSpeed License Plate Relocation Kit for Hyundai Genesis Coupe
$79.00
GrimmSpeed Black Ceramic Exhaust Manifold Crosspipe For 2006-2007 WRX / 2004-2008 FXT
GrimmSpeed Black Ceramic Exhaust Manifold Crosspipe For 2006-2007 WRX / 2004-2008 FXT
Out of stock
GrimmSpeed Exhaust Manifold Crosspipe For 2002-2005 WRX / 2008-2014 WRX / 2004+ STI / 2005-2009 LGT
GrimmSpeed Exhaust Manifold Crosspipe For 2002-2005 WRX / 2008-2014 WRX / 2004+ STI / 2005-2009 LGT
Out of stock
GrimmSpeed License Plate Relocation Kit For 2015+ WRX/STI
GrimmSpeed License Plate Relocation Kit For 2015+ WRX/STI
$79.00
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