543 Amateur Motocross National
Race Date: 12/4/2021
250 Open16 riders450 Open13 riders50cc All Stars8 riders50cc PW Shaft13 riders65cc All Stars10 riders85cc All Stars10 ridersCollegeboy 125cc - 450cc12 ridersMini Quad - 50cc to 90cc6 ridersMini Sr 85cc - 150cc10 ridersOpen Practice ALL3 ridersSchoolboy 125cc - 250cc22 ridersSenior 125cc - 450cc5 ridersSuperMini 112cc 2-stroke/150cc four stroke4 ridersVet Open 125cc - 450cc10 ridersWomen4 riders