Major advantages of upgrading to this product: (1) Aluminium 6061-T6 is a light material anodized for longer durability, corrosion resistant and aesthetics. It has a high tensile strength for greater durability when doing extreme RC action (2) The spring wire diameter is 1.3mm, which is the same as the original one, and the damper midpoint distance is 108mm (3) Shock shaft is thickened from 3.0mm to 4.0mm in order to be more sturdy and prevent bending. (4) Aluminum shock cylinder is light and sturdy, spring retainer is tightly sealed to prevent oil leaking. (5) Silicone oil is filled with smooth travel.