Formula RR
This class is made up of 125GP, 250 Production and Formula 3 machines. Seems to be a big miss match of bikes but it is quite fascinating to see the 125GP bikes ride round the outside of the bigger bikes in the tighter sections of the track as they are more nimble through the corners. As they hit the straight it's a different scenario, the bigger bikes break free and so the cycle continues.
What makes it really interesting is the onset of wet weather. As with most classes the key to winning is being smooth and consistent.
Class rules are a combination of the relevant machines used in this class.