The price of mountain bikes ranges from 400- 10000, and 1500 is enough for high school students to ride. The main components are several systems: suspension system: front fork, (full suspension vehicle and rear shock absorber) transmission system: front and rear transmission, finger braking system: V-type braking or disc braking (disc braking can be divided into mechanical and hydraulic) transmission system: toothed disc, chain, wheel set, flywheel and so on.