Easy to install —– Original standard, Built to meet standard specification, strictly follow factory control.direct replacement for the old or broken one, no need to use large machinery for auxiliary installation, no need for any modification or drilling, saving time and effort, directly replacing old parts. Function:Highperformance motorcycle parts, damper+spring design, stable enough, allows smooth running even on rugged and bumpy mountain roads.Aims to accelerate the attenuation of frame and body vibration to improve the ride comfort and smooth. Scope of application —-Shock absorber, the appearance has been polished many times, smooth and clean, antioxidation and antistamping. Suitable for motorcycles, offroader, ATVs, karts, etc. with 240mm /9.45in mounting diameter. Professional —– Rear shock absorber, with spring adjustment, it is suitable for quad bikes, some pit bikes, offroad vehicles and other projects, professionally manufactured, reliable performance