FitmentFor bikes with shocks of 320mm eye to eye distance.Fit on most 150cc750cc Sport bikes and Dirt Bikes, Go-kart and Moped Quad.MaterialMade of premium solid steel and aluminum alloy, with strong toughness, corrosion resistant and anti-rust, enduring long time use.Package Included1 Pair Shock Absorbers1 x WrenchSpecificationTotal Length: 350mm (13 3/4")Length of Eye to Eye Core: 320mm (12 5/8")Eye Maximum Tensile Strength 2,000 KgfWorking Stroke: 60mmSpring Stiffness: 110 kgPosition: RearMaximum Air Pressure 0.5 MpaFactory Air Pressure 0.4 MpaSpring Preload AdjustmentFeaturing spring preload adjustment,our air shock absorber corrects adjustment of spring preload to improve shock absorbtion.2 options for you:turn LEFT for increasing the preload,turn RIGHT for reducing the preloadIndependent Air ReservoirOur unique hydraulic construction system plays an important role,which effectively reduce bumps and vibrations on the road surface, prolong the life of vehicle components due to severe vibrations and provide stable performance and comfort.Spring Adjustment ToolsSelf-adjusting tool acts as a great helper to adjust the intensity of air impact, improve handling and reduce the risk of bottoming out.Fantastic shock absorber for your street bikeUpgrade your Go-kart , Dirt Bike, or Quad ride quality and absorb shock for driving comfort,motorcycle handling and driving safety.Just enjoy your riding of rising adrenaline and blowing winds with our shock absorber.