USAC MTM series rules were designed to leverage the generally accepted ‘D2’ rules that utilize stock internals. The series is an evolution of the USAC HPD series, therefore current competitors utilize USAC Focus, Honda spec engines, and motorcycle-based midgets. In the interest of building the series, we have expanded eligible engines to include the Ecotec that is growing in popularity across the country. Our rules reflect an effort to allow all of these engines to compete on an even basis. If the current rules are shown to favor a particular interpretation, or a certain make of engine, we will work to adjust the rules in as inexpensive way as possible, within a reasonable amount of time to maintain competitiveness. At this point we are not aware of any of any Quad 4, Toyota or Chrysler engines planning to participate in this region, and as a group of volunteers with limited resources, we elected to restrict the number of engine platforms to simplify technical inspections. As noted in our rules, we are willing to consider other engines upon request.

Please e-mail questions to USACMidwestthundermidgets@gmail.com. Please do not contact the racetracks for questions regarding rules.