Cruisers are usually single-speeds, but can be fitted with either internal gear hubs or derailer gear hubs.
Usually 3-5 speed IGHs or 6-7 speeds derailer gears.
A normal bike is different that a cruiser bike in many ways. A cruiser is not meant to be ridden long distances and is mostly meant for having an easy ride. A road bike is meant to go long distances and is therefore lighter.
2 gears
depends on the model. from 2-7 gears
MotoGP bikes have 6 gears.
It depends on the bike if the engine of bike is heavy it has more gears. Usually 5 gears are max gears.
4 to 6
only one
The biggest difference between a chopper bike and a cruiser style bike is that with a cruiser you are leaning forward, lying on the bike as it were, with a chopper style bike you are sitting upright and the handles are higher up.
Depending on the mountain bike that you have will depict the amount of gears. Most bikes for adults typically have about 21 gears. If this does no answer your question then what are levels?
There are many great cruiser bike brands. The most popular brand is Schwinn which is considered the best.
there are 6 gears, like any other race bike
This bike has a six speed gear box, so six gears.