Keep your heavy-duty Ford controlled on and off the pavement with the Rancho RS5000X Suspension Shock Absorber RS55267, a front-position damper that installs as a direct-fit replacement for the 2000-2005 Ford Excursion and the 1999-2004 Ford F-250, F-350, F-450 and F-550 Super Duty. See the Buyer's Guide tab for engine-level fitment. Built around Rancho's Cross Tuned technology — an exclusive rebound valving system paired with an advanced compression phase — it's designed to improve overall handling and performance in both on- and off-road use.
- Progressive Engagement Valving: custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimize a rough ride.
- Strong construction: 16 mm nitro-carburized piston rod to resist scuffs and corrosion, double-welded loops at stress areas, a 35 mm sintered iron piston and a polyvinyl protective boot.
- Twin-tube design: a large 2 1/4 in twin-tube body filled with all-weather fluid for cooler operation, rated to withstand internal temperatures of -40 to 248°F.
- Reduced fade: nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixing and help reduce damping fade and foaming.
A low-friction, self-lubricating seal retains gas and oil, while polyurethane rebound bumper and rubber bushings help absorb ride harshness. Backed by Rancho's Limited Lifetime Warranty.
Frequently Asked Questions
What vehicles does the RS55267 fit?
It's cataloged for the front of the 2000-2005 Ford Excursion and the 1999-2004 Ford F-250, F-350, F-450 and F-550 Super Duty. Check the Buyer's Guide tab to confirm your engine and configuration.
What is Cross Tuned technology?
It's Rancho's exclusive rebound valving system combined with an advanced compression phase, designed to improve overall handling and performance on and off road.
Is this shock gas-charged?
Yes. It's nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixing, which helps reduce damping performance fade and foaming.
What temperature range can it handle?
The large twin-tube body is filled with all-weather fluid and is rated to withstand internal temperatures of -40 to 248°F for cooler operation.
Should I replace shocks in pairs?
This listing is for one shock. Replacing shocks as an axle pair is a common best practice for balanced, even ride control; consult your service information for your application.
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