Soak up rough pavement and trail impacts with the RANCHO shock absorber RS5000X RS55047, a rear-position damper that drops in as a direct-fit replacement for the 2005-2016 Ford F-350 Super Duty. At its core is Rancho's exclusive Cross Tuned technology — a rebound valving system paired with an advanced compression phase built to improve overall on- and off-road handling and performance.
Cross Tuned control: Exclusive Progressive Engagement Valving is custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimize a rough ride, while the Compression Control Valve regulates fluid transfer to absorb impacts without disc flutter.
Strong and durable: A 16 mm nitro-carburized piston rod resists scuffs and corrosion, backed by double-welded loops at stress areas, a 35 mm sintered iron piston and a polyvinyl protective boot.
Handles temperature swings: The large 2¼-inch twin-tube body is filled with all-weather fluid for cooler operation and withstands internal temperatures from -40 to 248°F.
Reduces fade: Nitrogen gas pressurized to 150 PSI minimizes air-to-oil mixing to reduce damping fade and foaming. A polyurethane rebound bumper, rubber bushings and fluon-banded piston smooth out ride harshness. Backed by Rancho's Limited Lifetime Warranty.
Frequently Asked Questions
What vehicle does this RANCHO absorber fit?
It is a direct-fit rear shock absorber for the 2005-2016 Ford F-350 Super Duty. See the "Vehicles it fits" section to confirm the fit for your specific vehicle.
What position does the RS55047 mount in?
This is a rear-position shock absorber. Shocks are best replaced as a matched pair on the same axle for balanced ride control; this listing is for one unit.
What is Cross Tuned technology?
It is Rancho's exclusive rebound valving system combined with an advanced compression phase, designed to improve overall on- and off-road handling and performance.
How does the RS5000X handle temperature extremes?
Its large 2¼-inch twin-tube body is filled with all-weather fluid for cooler operation and is built to withstand internal temperatures from -40 to 248°F.
Why is this shock nitrogen gas pressurized?
It is charged with nitrogen gas to 150 PSI to minimize air-to-oil mixing, which helps reduce damping performance fade and foaming during use.
