Handlebar
The handlebar is often considered one of the most important parts of a road bike. Along with the pedals and saddle, the handlebars are one of three touch points that determine how you interact with your bike and the road ahead. As we all know, the handlebar is the steering wheel of a bicycle. It not only determines the handling of the bicycle, but also plays a key role in fit and aerodynamics.
Stem
Your bike's stem may be a small part, but it plays an important role. It is the connection between your handlebars and the steerer tube where your bike connects to your fork. Without this crucial part, you wouldn't be able to control your bike's front wheel in the direction you want it to go.
Seat post
The seatpost is a tube installed from the bicycle frame to the bicycle seat. We can adjust the height of the seatpost (the length of the tube), and usually the seatpost has a minimum height and a maximum height, and the seatpost height can only be adjusted between these two extreme values. Seat tubes are generally made of steel, aluminum, titanium, carbon fiber reinforced polymer and other materials.
Frame
As the skeleton of the entire vehicle, the frame determines and affects the correctness and comfort of the riding posture to the greatest extent. The frame component is the basic structure of the car, and it is also the skeleton and main body of the car. Other components are also directly or indirectly installed on the frame.
