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Micro 1 50cc Shaft Dr Limited (no mini-E)50cc Shaft Drive Only (E-2 Allowed)

Micro 2 50cc 4-6 Limited (no mini-E)50cc 2S/4S, SS, 10" Front Wheel, 24" Seat, 14mm Round Intake, 4-6 yrs

Micro 3 50cc 7-8 Limited (no mini-E)50cc 2S/4S, SS, 12" Max Front Wheel, 19mm Round Intake, 7-8 yrs

Micro-E 50cc 4-8 Limited Battery 1.5 kWh, Max wheel size 12", Max seat height 28". Restricted 12" wheels are permitted.

Micro 50cc Open 4-8 Limited (mini-E allowed)50cc 2S/4S, SS, 12" Max Front Wheel, 19mm Round Intake, 4-8 yrs

65cc 7-9 Modified, 59-65cc 2S, 7-9 yrs, 12-inch rear, 14-inch front

65cc 10-11 Modified, 59-65cc 2S, 10-11 yrs, 12-inch rear, 14-inch front

65cc 7-11 Open Modified, 59-65cc 2S, 7-11 yrs, 12-inch rear, 14-inch front

85cc 9-11 Modified, 79-85cc 2S, 9-11 yrs, 14-inch rear, 17-inch front

185cc 10-14 Open Modified, 79-85cc 2S, 10-14 yrs, 16-inch rear, 19-inch front. Must be 12 to ride Big Wheel.

185cc 9-13 Modified, 79-85cc 2S / 150cc 4S, 17" FW / 14" RW

Mini Sr 12-15 Modified, 59-65cc 2S, 12-15 yrs, 16-inch rear, 19-inch front

65cc 7-11 Beg Modified, 59-65cc 2S, 7-11 yrs, 12-inch rear, 14-inch front, less than 1 year of racing

85cc 9-13 Beg (small wheel only)Modified, 79-85cc 2S, 9-11 yrs, 14-inch rear, 17-inch front, less than 1 year racing

Supermini 13-15 Modified, 79-112cc 2S / 75-150cc 4S, 13-15 yrs, 16-inch rear, 19-inch front

Girls 11-16 (Supermini allowed)Modified, 85-150F, 2S/4S, 11-16 yrs, must be 12 to ride Supermini

Women 12+ (Supermini allowed)122-250cc 2S or 4S, 86-112cc 2S / 75-150cc 4S

122cc + Beg 122cc-Open, 21" FW / 19" RW minimum, less than 1 year of racing

125cc B/C 12-17 Modified, 122-125cc, 12-17 yrs

Schoolboy 1 12-17 Modified, B/C/D, 100-150cc 2S / 19" FW / 16" RW minimum

Schoolboy 2 12-17 (no supermini)Modified, B/C/D, 122-250cc 2S / 126-250cc 4S, 12-17 yrs, 21" FW / 19" RW minimum

College 18-24 Open Skill

250cc C Modified, Novice, 122-250cc

250cc B Modified, Intermediate, 122-250cc

450cc B 122cc – Open

450cc C 122cc – Open

Open A / Pro Sport 122cc – Open

Vet 25+ 122cc – Open, Open Skill

Vet 30+122cc – Open

Vet 40+ 122cc – Open

Vet 50+ 122cc – Open

Vet Women's 25+ Open Skill, 122cc – Open, no Supermini