Easy to install, no modification required, quick and easy to use, saving your time and energy. For ATV 1 pair 400mm 410mm 420mm 430mm 440mm Motorcycle Shock Absorber Rear Suspension shock absorber. which reduces the burden on the whole vehicle and brings a safe and efficient shock absorption effect. Shocks struts dampers robust construction ensures long lasting performance, reducing the risk of wear and tear even in demanding conditions. Installation instructions are not included, professional installation is highly recommended.