1Universal 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. 2Powerful Function: The rear suspension shock absorber can provide better overall damping management to improve driving comfort, motorcycle handling and driving safety and stability. 3Strength 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 Materials: The rear shock absorber with spring is carefully manufactured by premium steel alloy material, safe and eco?friendly, ensuring reliable strength and durability. 5Convenient Installation: The heavy duty motorcycle shock absorber is easy to install and remove without complicated operations required for time and effort saving.