Aw, dammit,” Keefer recalls thinking when he roared past Aidan Zingg lying limp and motionless on the back section of the course, not far from his green Kawasaki dirt bike. At first, Keefer assumed Zingg would walk away from the crash,

His passing was reported by Team Green and MX Sports. Zingg crashed midway through a race and was reportedly struck by multiple bikes, according to the motocross outlet DirtbikeLo

Aidan Zingg, a 16-year-old rising motocross star, has died following a crash during the 2025 Mammoth Motocross event in California.