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.

GrimmSpeed™ OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed™ we have worked with endless...
An External Wastegate (EWG) allows exhaust gases to be diverted prior to GrimmSpeed Subaru WRX STi LGT FXT...
An amazing 7 LAYERS! GrimmSpeed™ OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed™ we...
Tired of the endless searching for a 3" 2 Bolt premium gasket that doesn't blow out? Most aftermarket...
Design requirements for this intake were simple: The intake must not only be safe for the engine, but...
The GrimmSpeed Electronic Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will...
GrimmSpeed™ does it again! Introducting our enlarged bore Intake Manifold to TGV gaskets. Why do you want the...
An amazing 7 LAYERS! GrimmSpeed™ OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed™ we...
One-Piece Aluminum Casting - Precise fit and smooth flow without distortion Thick Flanges - Prevent heat and vibration...
On this page, you are looking at the GrimmSpeed Lightweight Battery Tiedown. This is a great way to...
An amazing 7 LAYERS! GrimmSpeed™ OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed™ we...
GrimmSpeed has provided you with new J-Pipe hardware. Every time you remove or replace your J-Pipe, you should...
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