About 5km/h
45mph with no mods
50 mph and over
totaly depends on what bike it is a i have a 50cc twist and go that does 66mph my friend has a geared bike that does just about 70 soo if you get the right bike it can be pretty fast
As fast as you want it to go. Ha ha ha! I just lied!
23 mph unless you have a kit on it. does that help?
Usually 25 to 35mph, they can be modified to go faster......
i think it goes 40mph or faster
depending on restrictions 30 to 35mph stock.
6000000000000000 mph
About 40kmph depending on road terrain and riders weight
Not every 50cc mini bike goes the same speed, it various on, the engine, the suspension, the weight of the rider, etc.