Firm up ride control on and off the road with the Rancho RS5000X Suspension Shock Absorber RS55165, a front-position damper that installs as a direct-fit replacement for the 1987-1996 Ford F-250, the 1997 Ford F-250 HD, and the 1986-1997 Ford F-350. See the Buyer's Guide tab to confirm your exact application.
- Cross Tuned technology: an exclusive rebound valving system and advanced compression phase work to improve overall handling and performance both on and off road.
- Progressive Engagement Valving: custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimize a rough ride.
- Strong, durable build: a 16mm nitro-carburized piston rod resists scuffs and corrosion, with double-welded loops at stress areas, a 35mm sintered iron piston, and a polyvinyl protective boot.
- Handles temperature swings: a large 2 1/4-inch twin-tube body filled with all-weather fluid runs cooler and withstands internal temperatures of -40 to 248°F, while nitrogen gas pressurized to 150 PSI minimizes air-to-oil mixing to reduce fade and foaming.
A low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression, and a polyurethane rebound bumper with rubber bushings helps absorb ride harshness. Backed by Rancho's Limited Lifetime Warranty.
Interchange: 34732 · 37055 · 911055 · RS5165 · N8023
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does the Rancho RS55165 fit?
It is a direct-fit replacement for the 1987-1996 Ford F-250, the 1997 Ford F-250 HD, and the 1986-1997 Ford F-350. Check the Buyer's Guide tab to confirm your exact application.
Is this a front or rear shock?
The catalog lists the RS55165 in the front position. It installs as a direct-fit replacement for the front on the listed Ford applications.
What is Cross Tuned technology?
It combines an exclusive rebound valving system with an advanced compression phase, working together to improve overall handling and performance on and off road.
How is the RS5000X built to last?
It features a 16mm nitro-carburized piston rod that resists scuffs and corrosion, double-welded loops at stress areas, a 35mm sintered iron piston, and a polyvinyl protective boot.
Why is it gas pressurized?
The shock is nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixing, which helps reduce damping performance fade and foaming.
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