Among the 25 components of bicycle frame, tire, pedal, brake and chain, the basic components are indispensable. Among them, the frame is the skeleton of the bicycle
There are many kinds of bicycles. Different bicycles and different rider qualities determine the speed of bicycles. Common bicycles in life, such as sports bicycles, belong to leisure bicycles.
Hydraulic mechanisms (brakes, shock absorbers...) generally hydraulic brakes and shock absorbers are easy to air, which will greatly reduce the effect of bicycles.