 Up to and including the 2018 season, Oswego supermodifieds were unwinged, having wedge-shaped bodywork to provide downforce.The fastest non-wing supermodifieds were capable of circling the track in less than 16.5 seconds, averaging better than 136 miles per hour in the process.For the 2019 season, Oswego supermodifieds will utilize fixed rear-wings for downforce.