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The International Hot Rod Association (IHRA) promotes professional, semi-professional and local sportsman drag racing for drivers at all levels. The Nitro Jam Drag Racing Series is a North American professional drag racing series comprised of events in major cities throughout the United States and Canada. The IHRA also oversees multiple sportsman racing programs including the Summit Racing Equipment Pro-Am Tour presented by AMSOIL, Summit Racing Equipment SuperSeries presented by AMSOIL and Summit Racing Equipment Tournament of Champions presented by AMSOIL.

For more information on IHRA Motorsports visit