We are a small speed-shop located in central Minnesota, specializing in engine dyno simulations and design of custom engineered components for street performance, drag race, circle-track and off-road competition.

Our primary objective is to offer the finest, proven performance parts to enhance your vehicle to perform above and beyond OEM specifications. We have tools and technical resources available to create a personalized performance package custom designed per your specifications.

July 4 1988 – Founded “Don’s Speed Shop and Performance Center”
2005 – Changed the company name to “Granite City Performance”
May 2013 – Became an authorized Steinjäger reseller
February 2015 – Became a distributor for CFR Performance