AMA Announces 2027 Supercross Rule Changes: 20-Rider Mains

The AMA's 2027 Supercross rulebook cuts main events to 20 riders, with the night show trimmed to the fastest 38 qualifiers and the top eight in each heat race transferring. Entries are capped at 66 per class, the minimum age for a pro license rises to 18, and chest protectors are now mandatory.