02/11/2026 18:46
ELLENTON, Fla./MORGANTOWN, W. Va. (November 2, 2026) Released this morning, the 2027 AMA Supercross Championship Rulebook includes a new 109 dB maximum sound standard for professional off-road motorcycle racing that will take effect beginning in January with the start of the 2027 Monster Energy SMX World Championship season at Angel Stadium in Anaheim, California. Developed in collaboration with the series…
