F3 - Dirt

****THIS CLASS RUNS THE SUPERMOTO DIRT SECTION****

This class applies for any motorcycle that does not fall within the guidelines of the above listed classes.  Riders may bump up into this class with any of the above-mentioned racing class machines.  Motorcycles must not exceed the following guidelines:

• Dirt Bike Chassis
• Unlimited modification to frame
• Unlimited modification to suspension.
• Unlimited wheel size.
• Unlimited modification to braking system.
• Unlimited modifications to exhaust with sufficient silencer.
• Unlimited modification to carburetor.
• Engine displacement must not exceed
• 125cc air cooled 4-stroke 2 valve
• 75cc air cooled 2-stroke
• 63cc liquid cooled 2-stroke
• No liquid cooled 4-strokes