progressive federung 512 atv shks frt 14 5 512 1017 512 1017bIncrease Ground Clearance and Wheel Travel 1 " 2" on Most Models, Rugged Double Steel Wall Construction, Progressive Rate Springs for Comfortable Ride and Improved Load Carrying Capacity, Five Position Position Post LOAD Adjustment for Varying LOADS, Shock Sox Are Included to Protect Shocks From Rock, Sand and Mud Damage, Shock Sox Are Easily Removable With Hook and Loop Fasteners for Cleaning and Adjustments, Not Compatible With Lift Kits