With the amazing support of IRWIN® as the team’s naming rights sponsor, Charlie Schwerkolt has been able to assemble a fantastic team that will be competing in the 2021 Repco Supercars Championship with driver Mark Winterbottom in the IRWIN Racing Holden Commodore..
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Team 18 has announced that Mark Winterbottom has signed a two-year contract extension for the former Bathurst and Supercars Champion to remain with the Melbourne-based squad through to the 2022 Supercars season.