2005-2025 Ford F-250/F-350 Super Duty 4WD 7 Inch Lift Front V.S. 2.5 Aluminum Series Shock Absorbers Internal Reservoir Pair ICON Vehicle DynamicsICON Vehicle Specific (V. S.) 2. 5 Series shocks are designed and built to give your vehicle outstanding performance off road and a smooth ride on the street. These shocks are configured specifically for each application in both length and damping tune. Like all ICON'S Shock Absorbers, V. S. 2. 5 Series shocks are 100 Percent rebuildable and 100 Percent revalveable. The larger diameter and oil volume of ICON 2. 5 IR Series shocks provide better ride