The 25-274974 5160 Series Shock Absorber is the ultimate shock for the front your 2017-2020 Ford Super Duty F-250/350 4WD. These shocks feature a monotube design with a self-adjusting deflective disc valve that reacts immediately to surface changes to give your truck optimal handling, stability and enhanced safety. The 5160 Series shocks have a remote reservoir that increases shock oil capacity for greater heat dissipation and are filled with high gas pressure and a longer service life even when pulling trailers or driving off-road. Sold Individually. SPECIFICATIONS: Part Number: 25-274974 Series: 5160 Series Drive Type: 4WD Position: Front Descriptor: Front Lifted Height: 2-2.5"Quantity Needed Per Vehicle: 2 Finish: Zinc Plated Reservoir: Yes Body Design: 46mm ID Smooth Body (Non-Coilover) MEASUREMENTS: Collapsed Length (IN): 13.17 Extended Length (IN): 21.22 Collapsed Length (MM): 334.5 Extended Length (MM): 539.0 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.