Get the most on and off-rod in your 2017-2019 Ford Super Duty F-250/350 4WD with the Bilstien 25-274981 5160 Series Shock Absorber. These shocks feature a monotube design with a self-adjusting deflective disc valve that reacts instantly to changing road conditions to give your truck better handling, stability and enhanced safety. The 5160 Series shocks are filled with high gas pressure for longer service life even when pulling trailers or driving off-road, and a remote reservoir that increases shock oil capacity for greater heat dissipation. Sold Individually. Specifications:Â Part Number:Â 25-274981 Series: 5100 Series Drive Type: 4WD Position: Rear Descriptor: Rear Lifted Height:0-2" Quantity Needed Per Vehicle:Â Finish: Zinc Plated Reservoir: Yes Body Design: 46mm ID Smooth Body (Non-Coilover) Measurements:Â Collapsed Length (IN)18.50 Extended Length (IN)31.61 Collapsed Length (MM)470.0 Extended Length (MM)803.0 Note: Lift height is suggested by mfg. Due to the many different aftermarket suspension systems it is recommended that a measurement is taken for proper application. A pin to eye shock is measured from the base of the stem where the mounting hardware rests to the center of the eyelet.