The Amsoil USAC/CRA, USAC West Coast, and USAC Western Classic Sprint Cars welcomes Extreme Mufflers to their 2014 Racer Contingency Program. Their support is appreciated very much and you can check out their line of racing mufflers for Sprint Cars, Midgets, Dwarf Cars, Modifieds, and more at www.extrememufflers.com.
Please support those that support racing!
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