50cc 4-8 Shaft (anything that doesn't fit in 50 JR & Sr)
50 Jr (4-6)
50 Sr (7- 8)
65 Jr  (7-9)
65 Sr  (10-11)
85 Jr (9-11)
85 Sr (12-15)
125 2 Stroke only (trophy class)
250A  (122cc- 250cc 2 & 4 strokes)
250B
250C
Open A - (122cc - Opencc)
Open B
Open C
14-24 yrs old 
25+
30+A
30+B
35+ - trophy  only class
40+
45+
50+
Super Mini 12-16 yrs
Schoolboy (125 2 Stroke only)
Girls 9-15 79cc-105 2 Stk
Women  99cc-250cc