HB 406 -- Motorized Bicycles Sponsor: Roorda This bill changes the definition of "motorized bicycle" on purchases after January 1, 2006, to mean any two- or three-wheeled device having an automatic transmission and a motor with a cylinder capacity of not more than 25 cubic centimeters which produces less than three gross brake horsepower and is capable of propelling the device at a maximum speed of not more than 30 miles per hour on level ground. Currently, the cylinder capacity is not more than 50 cubic centimeters.Copyright (c) Missouri House of Representatives