Grant
Not street legal anywhere in the US.

CMACorreia
They are not legal in any street.

Buddy
Missouri: Allowing a young person to travel via mini-motorcycle may seem convenient to some parents. Or, perhaps parents see it as something “fun” for their child to own. Law enforcement officers who respond to traffic crashes involving these “vehicles” have a different viewpoint. These types of vehicles are hard to see and offer no crash protection. Law enforcement takes the safety of the motoring public very seriously. Drivers of mini-motorcycles are encouraged to wear an approved helmet. Motorized mini-motorcycles that have a motor with a cylinder capacity of more than 50cc and/or the ability to travel faster than 30 mph on level ground are--by law--defined as motorcycles. As such, these types of vehicles must abide by all of the state laws pertaining to motorcycles. Parents: Allowing your child or ward under age 16 to operate a motorized mini-motorcycle on a roadway is prohibited by law. Help keep your children safe, obey the law. -- These mini-motorcycles or "pocket bikes" are not manufactured with a conforming 17-digit vehicle identification number (VIN), indicating the manufacturers intended they be operated on private property (with owner's permission) and not for use on a highway. Since they are not manufactured with a 17-digit VIN, they cannot get registered as a legal motor vehicle or as an off-highway vehicle, which makes them illegal for use on the highways or as an off-highway vehicle. Frequently Asked Questions What if my pocket bike's engine is less then 50cc's? I've heard that they are not required to be registered and are street legal. This is incorrect information. There is nothing in the vehicle code that allows a motor-driven cycle to be operated on the highway that is less than 50cc's. Any motor-driven cycle less than 150cc's is required to be registered, meet the equipment standards of a motorcycle, and the operator must have an M1 driver license. What will happen if I'm stopped by the CHP while riding my pocket bike on the streets? If a person is stopped by a CHP officer while operating a mini-motorcycle (pocket bike) on a highway, that person may be cited for no driver's license or lack of proper motorcycle endorsement, unsafe vehicle, or helmet use, and the bike may be impounded which would require tow and storage fees be paid by the violator. My pocket bike was advertised as a toy, so wouldn't that make them legal to ride? No. These vehicles can travel at high speeds (20 to 50 mph) and ARE NOT TOYS. They are motor-driven cycles. I thought my pocket bike was a motorized scooter. No. Pocket bikes meet the definition of motor-driven cycles and within the definition of "motorized scooter", Section 407.5 VC, it states that ". . . for the purposes of this section, . . . a motor-driven cycle, as defined in Section 405 VC, . . . is not a motorized scooter." Where can I legally ride my pocket bike? The pocket bikes were manufactured for paved closed circuit racing courses. They may only be operated on private property with the owner's permission. Can my 10-year old child ride a motorized scooter? The operator of a motorized scooter must be at least 16 years of age even if the motorized scooter is powered by electric energy.