Bas Kaligis / Thursday, April 30, 2020 / Categories: Rotax Gear up and prepare the US Rotax Grand Nationals! UNITED STATES Rotax MAX Challenge Supplemental Regulation 2020 Previous Article Fabienne Wohlwend: from karting to W Series Next Article Bertrand Pignolet: "We have tried to reposition as many competitions as possible in the second part of the season" Print 1965 Rate this article: No rating Tags: Rotax MAX ChallengeUS Rotax Grand NationalsSupplemental Regulation 2020 Comments Please login or register to post comments.