Engine:

Two stroke and four stroke engines with a capacity of no more than 50cc.

 

 

Transmission:

A minimum of 3 gears and a maximum of 6 gears.

 

 

Wheels:

Wheel diameter must be between 16" and 18"

 

Number boards:

Red number boards with white numbers.

 

 

The bike will be subject to ACU standing regulations in every other respect.