Sinister Diesel founders Brian George, Michael Mitchell and their whole team share a love of everything diesel. One afternoon, while working on Brian’s truck they thought of starting a new company.

“There were already online parts suppliers,” says Brian, “so we knew it wasn’t enough to just start another one. We wanted to create a high performance diesel parts company that actually changed the way business was done.” From the quality of parts, to the Sinister name, to the trademark Sinister Blue® color, the company has set new standards for the aftermarket diesel parts industry.


“We must be doing something right,” says Mitchell. “The popularity of our components and merchandise has grown each year bringing rapid change and expansion to the company. In the early days, we occupied a simple office with a single desk!

Sinister Diesel now operates in 30,000 sq. ft. and prides itself on manufacturing the vast majority of parts we have for sale right here at our Roseville headquarters which is located right outside of Sacramento, California. Here at Sinister Diesel we have our own vision about how a part should perform, and what it should look like. By fabricating these parts ourselves, we can maintain the highest quality from start to finish. We believe quality starts with taking pride in your work and by keeping our manufacturing local, here in the USA, we provide jobs for American fabricators, craftsmen, and support staff.” When you buy a Sinister Diesel product, you can know that you're getting the best product in the industry and that you're supporting American manufacturing jobs.

Sinister Diesel will continue to be #1 in Parts and Kits, helping customers Unleash their trucks, dealers Unleash their profits, and the industry Unleash a market driven by people like you, wanting to live the Sinister Lifestyle! WE ARE AMERICAN BORN & BRED®