This is the third stage of the motorcycle - maturity.

After the 20th century, after 30 years, with the continuous progress of science and technology, bulldozer hydraulic cylinder motorcycle production and use of the suspension shock absorber system, mechanical ignition system, mechanical drum brakes, chain drive, so that the motorcycle has climbed to new stairs, motorcycles gradually mature, Mechanical Transmission dozer widely used in transportation, competition and military aspects. This is the third stage of the motorcycle - maturity.