This is a Regional Championship and is open to riders on 1000cc bikes who lap quicker than 1 min 19,999 secs.
This is a Regional Championship for riders on 600cc bikes (and equivalent, see the class rules) who lap quicker than 1 min 19,999 sec.
This is a Club class and is divided into 2 sub classes, Super Twins Cup 650 and Supersport 300.
This is a Club class for older model bikes, and although the rules make provision for 3 sub classes, Classic Bikes, Vintage Superbikes and New Era bikes.
This is a Club Championship for riders on 600cc / 750cc / 1000cc bikes who lap slower than 1 min 20,000 sec. It is also the class that Breakfast Run riders would graduate to, once they become too quick for the Breakfast Run Class.
This is not a Championship class. This is an invitational class for riders on 600cc / 750cc / 1000cc bikes who have not raced on the main circuit before, and who would like to try Main Circuit motorcycle racing.