Features: brand new and high quality Rear suspension shock absorber, suitable for most dirt bike with same mounting size This suspension provides a smoother ride and better overall damping management Constant rate front coil spring helps to improve stability and maintain riding height Pulling seamlessly through the mandrel tube can reduce the wear of internal components, thereby prolonging the service life. Super-finished, chrome-plated piston rods have anti-corrosion properties, a more consistent wear surface, suitable sealing and lubrication, and a longer product life Specifications: Material:Metal Size:Approx.7.3x9.7x5x1.2cm/2.87x3.82x1.97x0.47inches Color:Black for Kugoo M4 Package Includes: 2x Spring Shock Absorber note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.