Michael Mosiman

Michael Mosiman (#23) races the 250 class for Monster Energy Yamaha Star Racing. In 2026 he opened the 250SX West season with two podiums in the first three rounds before a training crash ahead of round seven (elbow, arm and hand injuries) ended his Supercross campaign; he finished eighth in the final standings. He later fractured his collarbone in free practice at SMX Playoff 1 in Columbus. The Sebastopol, California native's comeback 2025 season included a 250SX West podium at Arlington and a 250MX podium.