Chassis designations usually refer to the chassis tube diameter used in the manufacture of the kart. For example 30/32 indicates 30mm diameter tube for lateral  chassis members and 32mm for the outside or longitudinal chassis members. The type of chassis you purchase will be a function of your body weight and the class you decide to compete. The bigger the chassis diameter the stiffer the chassis. Typical chassis diameters and their uses are outlined in the table below: