Feature 1 Pressure can be adjusted by springs and air nitrogen 2 The damper and spring designed for long durability 3 Reduce bumps in the driving of motorcycles 4 Easy to install Specification Brand RFXProduct Name Motorcycle Shock AbsorberColor BlackChrome All Black BlackGold Please let us know the color you d like You can leave the message on your Paypal note to tell us Material Aluminum IronTotal Length 390mm 15 35 Eye Core to Eye Core Center Distance 360mm 14 17 Eye Inner Diameter 12mm 0 47 Eye Thickness 20mm 0 78 Spring Thickness 7mm 0 27 Eye Core Inner Diameter 10mm 0 39 Eye Core Outer Diameter 12mm 0 47 Factory Air Pressure 0 4 MpaMaximum Air Pressure 0 5 MpaAir Reservoir AdjustablePlacement On Vehicle Rear Left RightFitment For work on most 150cc 750cc street bikes karting go kart scooters and moped quad ATV with shocks of 360mm eye to eye distance Please Compare With Your Original One Before Purchasing Note 1 We provide clear pictures measurements where possible Please check as much as possible to make sure the item is the one that you need 2 Please allow 0 5 1 inch difference due to manual measurement 1inch 2 54cm 3 The color of the actual items may slightly different from the listing images due to differentcomputer screen thanks for your understanding 4 There are no instructions included in this kit If you want to know how to use or install it please contact us by Email We will provide help as much as possible Package Include