OCCASION??This shock pack includes many features found on higher end shock absorbers. This rear shock absorber is a perfect enhancement to mountain bikes, electric bikes, mobility scooter and other bicycle. PRODUCT SPECIFICATION??High-quality finished surface: CNC alloy material, dark hard-anodized, Coil spring. Bushings: Top bushing size is 8mm x 24mm; bottom bushing size is 8mm x 24mm Easy to use??High strength and durability.Brand new and high quality bicycle shock absorbers make you more able in the riding process. Suitable for mountain bikes, electric bikes, mobility scooter and other bicycle Note??Please measure the size of your shock for matching before buying Color: black, silver gray Length: 165mm Pounds: 650lbs black, 550lbs silver Weight: black 474g, silver 444g Application: Soft tail mountain bike Note: Upper and lower bushings without screws, bushing length is 24mm, inner diameter of eye is 8mm