The Hedman Performance Group (a.k.a. The HP Group) consists of Hedman Hedders, Trans-Dapt Performance Products, Hedman HUSLER Hedders and Hamburger's Performance Products. Hedman & Trans-Dapt are both original members of the automotive performance aftermarket.

With a combined 135+ years of performance product experience, racers and street performance enthusiasts worldwide trust our brands to provide them with quality performance and customizing products including street and race headers, billet accessories, LS Swap products, powder coated engine accessories and more.

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