A motorized bicycle is vehicle that has:

-2 or 3 wheels.
-An automatic transmission.
-An engine capacity of no more than 50 cc.
-A motor that produces fewer than 3 brake horsepower.
-A maximum speed of 30 MPH on flat ground.

As long as the bike meets the above criteria, in MO you DON’T need to title or register it and you only need a valid driver’s license to operate it—you don’t need a motorcycle endorsement. It must be registered in KS.

However, if your cycle exceeds these criteria, it’s likely a motorcycle or a motortricycle (has 3 wheels), in which case you’d need a motorcycle license or endorsement and registration.