WSK Promotion is the new Rotax MAX Challenge Euro Trophy and Winter Series promoter, starting from 2024 WSK Promotion is the new Rotax MAX Challenge Euro Trophy and Winter Series promoter, starting from 2024 Bas Kaligis / Thursday, September 7, 2023 0 846 Article rating: No rating WSK Promotion is pleased to announce the achievement of a multi-year agreement with BRP-Rotax aimed at organizing and promoting the Rotax MAX Challenge Euro Trophy championship and the Winter Series, starting from 2024. Read more