<HTML>From what I can determine, the standard Moped Motor produces less than 2 HP. Here in Florida, the law allows any bikes or motorized vehicles of less than 5 hp a sort of limbo where they are neither Motorcycle or Bicycle, and still have to be registered with a tag, year sticker, Ect.
The little motor with the 50 cc capacity will get you running at speeds of about 30 mph and with modifications to the basic design, like the exhaust and backpressure, will travel at speeds around 10 to 15 miles per faster. The basic problem is this changes the definition of what a Moped and the Motorcycle are. You might be at less than 5 HP, but at the same time you would be tootling along at Motorcycle speeds and now can be classified as a MotorBike.