you do not need to register a 49cc moped/scooter but you do need a car license to ride one. you are not allowed on turnpikes or highways and the top speed can not exceed 30mph.
Usually, to ride without a license, the scooter must be 49cc or less and have a top speed of 35 MPH.
47
25-27-mph standard top speed for a mini dirt bike
it is 60 kilometer's per hour
Top speed for an electric razor scooter is around 10mph.
55mph
55-70mph is top speed of the scooter.
A 300cc scooter will generally top out at around 85-90 mph.
The 250 cc motor scooter is commonly the largest engine size scooter. The 250 cc scooter has a top speed of about 75 miles per hour, but usually the engine size will top the speed out at about 60 miles per hour.
Other factors such as weight of passenger(s), grade, transmission ratios, etc will influence the top speed of 49cc. Assuming it is a moped or scooter, it has been designed not to exceed 30MPH (although many will) to comply with moped/scooter laws since speeds of above 30 mph can classify it as a motorcycle. Again assuming it is a scooter or moped, if you are clocked on radar exceeding 30mph the scooter/moped may no longer be classified as such and may be reclassified as a motorcycle - and the driver may receive numerous citations, i.e. no motorcycle license, no helmet, no motorcycle registration, no insurance, etc. Hope this helped.
The maximum speed limit for a 150 cc scooter is around 60 mph. The size and weight of the rider plays a large part in the top speed.