Caleb, these bikes aren't really made for racing. They don't have the power, suspension or handling to compete against real race bikes. That's why a Baja 90 is $650 and a Yamaha YZ85 is $3700. There is no rule saying you cannot race the bike, it's just that you couldn't really be competitive, but you could get out there and just race for fun. That bike would really be more suited to a pit bike race. Many tracks hold pit bike races and that is basically what you have. Generally the pit bike races will cut out parts of the track with big jumps or have a totally different track for pit bikes.
