2024  Turns out the new year will be a big one for anniversaries in the world of motorcycling. It’s the 100th year for both motocross as a sport—the first “scrambles race” was held in England in 1924—and the American Motorcyclist Association (AMA), founded that same year. It’s also the 50th season for the Monster Energy AMA Supercross Championship. And 1974 was the first year of production for both Kawasaki’s KX line and Yamaha’s YZ models, as well as the birth of Fox Racing.