50cc OIL INJ-UNDER 5 HP	125/250F INTERMEDIATE
50cc 4-6	125/250F EXPERT
50cc 7-8	OPEN OUTLAW
50cc OPEN 4-8	FOUR-STROKE
65cc 6-8	250/450F BEGINNER
65cc 9-11	250/450F NOVICE
65cc OPEN 6-11	250/450F INTERMEDIATE
WOMEN	250/450F EXPERT
85cc BEGINNER 7-16	PIT BIKE OPEN
85cc JR 7-11	PLUS 25 NON-PRO
85cc SR 12-16	PLUS 30 A/B
85cc SUPERMINI 7-16	PLUS 30 C/D
SCHOOLBOY	PLUS 40 A/B
125/250F BEGINNER	PLUS 40 C/D
125/250F NOVICE	PLUS 50 NON-PRO
TWO-STROKE