Class
A Experts - 2 or 4 stroke, up to 350cc Pre '70
B Experts - Over 350cc / Twins / Pre Unit Pre '70
C Intermediates - Any cc – 2 or 4 stroke Pre '70
D Clubman - Any cc – 2 or 4 stroke Pre '70
E Rigid's - Any cc Pre '70
G Gentlemen - In at Begins, exit at End Card, anywhere in betwee