Top-mounted bicycle frame: also known as roof-mounted bicycle frame, it has the advantage of being able to carry bicycles while driving fast, professional, safe and stable, and is popular with bicycle clubs and professional athletes. The disadvantage is that after the bicycle is fixed on the roof of the car, the height increases significantly, and the trafficability will be affected to a certain extent; The most stable and safe overhead bicycle frame in the world adopts the design of double arms.

The frame component is the basic structure of the bicycle, and also the skeleton and main body of the bicycle. Other components are also directly or indirectly installed on the frame. There are many structural forms of frame components, but they can be divided into two categories: men's frame and women's frame.