50cc no modified cylinder .
Modified exhaust . carb , intake are ok. Driver must have less than 20 races with MASRC or no more than 5 1st place wins . This class can also race with the F3 MiniGP classes.
50cc no modified cylinder .
Modified exhaust . carb , intake are ok. Driver must have less than 20 races with MASRC or no more than 5 1st place wins . This class can also race with the F3 MiniGP classes.