Ultima | Rear Shock Absorber HD 35mm Gas | Nissan Pathfinder R51 2005–2013 | 400442Ultima Rear Heavy Duty Shock Absorber (Single) for Nissan Pathfinder R51 4WD 20052013 This Ultima Rear Heavy Duty Shock Absorber (400442) is a powerful, gas charged component from the 400 Series, custom designed for the rear coil spring suspension of the Nissan Pathfinder R51 4WD Wagon. Featuring a 35mm Big Bore design, this shock is engineered to handle challenging terrain, heavy towing, and constant loads. It provides superior dampening control,