2. Handlebars: genuine handlebars have high electroplating finish, tight and symmetrical assembly, appropriate width and warping, and there is a permanent steel seal mark in the middle of the handlebar joint.
3, bell: genuine bell cover has a permanent mark.
4, front fork: genuine front fork combination is closely symmetrical, smooth paint, permanent decals on both sides.
5. Rim: The genuine rim is round and smooth, the spoke holes are evenly and symmetrically distributed, and the valves are facing each other. Permanent "steel seal marks are smooth and tidy.
Extended data:
Precautions for cycling:
1. If the seat is too hard, you can make a soft seat cover with foam plastic to reduce the friction between the seat and the genitals.
2. The user needs to adjust the height and angle of the seat. The seat is too high, and the hips will inevitably move left and right when riding a bicycle, which is easy to cause perineal abrasions; The front of the car seat is upturned, which is more likely to damage the perineum.
3. When users ride bicycles for a long time, they should pay attention to changing the riding posture, so as to move the body center of gravity and prevent a certain point of perineum from exerting force for a long time.
4. When users ride the gearbox for the first time, the speed should not be too fast and the time should not be too long. When you get used to it, you should speed up and work overtime.
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