PICKERINGTON, Ohio — In partnership with Feld Motor Sports and MX Sports Pro Racing, the American Motorcyclist Association (AMA) has announced the 2010 national numbers for pro-licensed riders in the Monster Energy AMA Supercross, an FIM World Championship, and the Lucas Oil AMA Pro Motocross Championship.
National numbers in the disciplines of Supercross and Motocross are assigned by the following process: