Features: 1.Universal Accessory: The shock absorber fits for 50cc?125cc ATVs and Go Karts of replacement for TaoTao, replacement for Buyang, replacement for Coolsport and many other Chinese brands. 2.Powerful Function: The rear suspension shock absorber can provide better overall damping management to improve driving comfort, motorcycle handling and driving safety and stability. 3.Strength Adjustment: The rear spring shock absorber is professionally designed with 5 damping strength, you could adjust according to your needs to deal with different road conditions. 4.High Quality Materials: The rear shock absorber with spring is carefully manufactured by premium steel alloy material, safe and eco?friendly, ensuring reliable strength and durability. 5.Convenient Installation: The heavy duty motorcycle shock absorber is easy to install and remove without complicated operations required for time and effort saving. Specification: Item Type: Rear Spring Shock Absorber Material: Steel Alloy + Spring Mounting Hole Diameter: Approx. 10mm/0.4in Hole Center Distance: Approx. 285mm/11.2in Spring Diameter: Approx. 8mm/0.3in Mounting Hole Thickness: Approx. 30mm/1.2in Function: The spring pressure can be adjusted in 5 levels, you can adjust it according to your own load. Please note that you must use an adjustment tool (not included), otherwise it will easily cause finger damage. Fitment: Universal for motorcycle off-road vehicle moped ATV, etc. with 285mm hole center distance. Replacement for Tao Tao, replacement for Buyang, replacement for Coolsport, replacement for Lifan, replacement for Tank, replacement for SUNL, replacement for Redcat, replacement for Eagle, etc. PackageList: 1 x Rear Spring Shock Absorber