High-performance shock absorber: The suspension provides smoother driving and better overall damping management, improving driving comfort, motorcycle handling and driving safety Product application: general-purpose air suitable for most 150cc~750cc street cars, Karting (karting), scooters and Moped Quad (ATV), with a force of 320mm. A great choice for upgrading your motorcycles and off-road vehicles. Product material: CNC aluminum alloy + high-strength steel, high-performance spring. Steel anti-corrosion, waterproof, anti-rust, personalized appearance Product specifications:Total length: 350 mm (13 3/4 inches). Eye diameter (with sleeve): 12 mm. Maximum eye tensile strength: 2,000 kgf. Spring stiffness: 243lbs(110 kg). Maximum load: 440 lbs(200 kg) Adjustable Air Reservoir: The air tank of the shock absorber can be adjusted for inflation and deflation, to deal with different road conditions. Easy to install, before placing an order, please make sure the size fits your