2.4.1 Class Displacement and Configuration Limits
Class limits are set as follows:
Formula Colorado
• Up to 430cc two cylinder, two-stroke, air-cooled
• Up to 550cc single cylinder, two-stroke
• Unlimited single cylinder, four-stroke
• Up to 600cc two cylinder, four-stroke, liquid cooled, four valves per cylinder
• Up to 700cc two cylinder, four-stroke, liquid cooled, three valves per cylinder
• Up to 805 CC two cylinder, four stroke, air cooled, two valves per cylinder
