Bicycle front forks are divided into spring front forks, oil spring front forks, and oil-gas front forks.
1. Spring front forks
Use springs as shock absorbers. For example, the bottom forks of RockSHOX and Manitou, such as J1 and SIX, all use springs as shock absorbers. Its structure is simple, and there is usually a spring on one side of the front fork, or springs on both sides, and the former is more common.
2. Oil spring front forks
Oil resistance + spring. This type of fork is based on the above, with oil damping added on the other side of the spring. Oil damping is to use oil to adjust the speed of spring rebound. This type of fork generally has rebound adjustment and locking functions on the basis of adjusting the hardness and softness, and some have travel adjustment functions.
3. Oil-gas front forks
This is similar to the oil spring fork above, but uses air pressure instead of springs as shock absorbers. The hardness and softness are adjusted by pumping air. Generally, there will be different air pressure values for riders of different weights.