
400 Thunder launches new Pro Radial Sportsman bracket
400 Thunder’s Sportsman Series will be bolstered by the introduction of a new bracket, Pro Radial. Pro Radial is set to be one of the most diverse but hotly contested classes and open to a variety of engine configurations, with allowances for four, six and eight cylinder blocks, blowers, turbochargers and nitrous oxide – all running on convention radial tyres.



























