Depends on the country. In the USA yes you can so long as you can maintain the minimum speed limit on the highway. In places like Korea motorcycles regardless of engine size are banned from most major highways. I drive a 125cc Kymco Downtown (look it up its a BIG 125cc and highest horsepower in the class) and I can do motorcycle approved class 2 highways in Korea and even in the mountains it rides great. Best part about 125cc is in most countries they are classified as scooters as there are huge tax incentives for this. I paid $80 for the life of my scooter... in any case RIDE SAFE
It depends on your country
125cc i suggest a hyosung gt125r
a 125cc motorbike
-that depends on what you mean by restricted- to ride a 125cc bike you have to be at least 17 you pass your cbt- you are allowed to ride a bike up to 125cc as long as you wear L plates at all times, do not go on motorways and do not carry a pillion passanger
Kawasaki is the best 125cc dirt bike. Hopefully this link will helps you.
a 125cc pit / stomp bike can reach limits of 70mph :)
yes on the persons lawn
The legal age in the UK (Cornwall) for riding a 50cc moped is 16, riding a 125cc is 17, however at 17 you can take your full bike license, and ride a more powerful bike but it must be restricted.
No
no i cant turn a 50cc pitbike into a 125cc pit bike the bike will blow up .
The size or displacement of the engine, 50cc versus 125cc.
The fastest 125cc bike is the Aprilia 125 RR. This bike can do 120mph and its 0-60 is 6 sekonds. the sekond fastest 125cc is the cagiva mito. This bike will do about 110mph. Its 0-6- is also 6 sekonds. both of the bikes have 35hp!
A 125cc is a pretty small bike. My first bike was a Honda Rebel 250cc and it held two people pretty well. We never went on the highway two-up but it was pretty good for city/suburban streets. The 125 is just a little smaller so you can probably carry a passenger.