50cc OIL INJ-UNDER 5 HP	125cc INTERMEDIATE
50cc 4-6	125cc EXPERT
50cc 7-8	OPEN OUTLAW
50cc OPEN 4-8	FOUR-STROKE
65cc 6-8	250cc BEGINNER
65cc 9-11	250cc NOVICE
65cc OPEN 6-11	250cc INTERMEDIATE
WOMEN	250cc EXPERT
80cc BEGINNER 7-16	PIT BIKE OPEN
80cc JR 7-11	PLUS 25 NON-PRO
80cc SR 12-16	PLUS 30 A/B
80cc SUPERMINI 7-16	PLUS 30 C/D
SCHOOLBOY	PLUS 40 A/B
125cc BEGINNER	PLUS 40 C/D
125cc NOVICE	PLUS 50 NON-PRO