Regulations The Rotax MAX Challenge regulations are based on fairness and sportsmanship 2023 Rotax MAX Challenge Regulations Sporting regulations 2023 Canadian RMC – Sporting Regulations – published on March 8 Technical regulations 2023 Canadian RMC – Technical regulations – published on March 8. Bulletins 2023-1 – Technical bulletin – Micro-MAX & Mini-MAX configuration – published on April 25.