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.

An elegantly engineered solution. Custom Machined Adapter - Makes use of the factory inlet recirculation port, instead of blocking...
Meticulous engineering meets elegant design. With the 2015 J-Pipe, the devil is truly in the details and the...
Meticulous engineering meets elegant design. For years you've been asking us for intakes, and for years we've silently...
Flared Adapter Transition!(Creates a smooth transition from your 3" downpipe to your OEM midpipe) Flanged for OEM Donut...
** INSTALLATION NOTE - Take care to install the air filter onto the intake tube properly. Push the...
Your Subaru’s cooling system is only as good as its weakest link, commonly that’s the old, dry-rotted OEM...
The GrimmSpeed Charge Pipe kit replaces the restrictive plastic stock unit on the FA20 powered WRX with larger...
Special Fitment Note: Supported fitments include only those vehicles running OEM STI and GrimmSpeed Top Mount Intercoolers. The...
Improve style and Increase Flow! Most adjustability available on the market! Mounts in OEM tow hook location (No cutting...
The Original Direct-Fit BCS for turbo Subarus. GrimmSpeed is proud to provide the most complete and easy to use 3-Port Electronic Boost...
Most Bracket Mounting Points Available!(5 strut tower mounting points) Indestructible 12L14 CNC Laser cut construction and black powder coating Pedal...
Adding an aftermarket Up Pipe is one of the first things you should do to your Subaru. Arguably...
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