Rear shock absorber: It also uses the perfect combination of spring and damping mechanism to effectively absorb ground vibration and maintain vehicle stability. The working cylinder and air bag cylinder are all machined by lathes, with accurate dimensions. The hard oxidation surface treatment is combined with the hard chromium plating piston rod. The surface roughness is as low as 0.15, and the hardness and wear resistance are significantly improved. In addition, the application of quenching, high-temperature tempering and other processes ensures the excellent performance and long life of the shock absorber. Likewise, each shock is rigorously tested to ensure quality and secure your ride