09/03/2026
600 Winged Micro Rules: U6SA engine and chassis specifications. 800-lb minimum weight with driver. Maximum 12-square-foot top wing. Hoosier U6SA, NMMA, ASCS2 and KS1, plus American Racer NMMA or MD57B, with the right rear required to read 50 on the durometer before and after the race. No tire treatment. Remaining three tires open