Smooth out rough pavement and stay planted off-road with the Rancho RS5000X Suspension Shock Absorber RS55287, a rear-position twin-tube damper. It's a direct-fit replacement for the 2004-2019 and 2021-2025 Ford F-150 and the 2006-2008 Lincoln Mark LT — see the Buyer's Guide tab for engine-level fitment.
At its heart is Rancho's exclusive Cross Tuned technology, pairing a rebound valving system with an advanced compression phase to improve overall on- and off-road handling. Exclusive Progressive Engagement Valving is custom-tuned per vehicle to help reduce initial low-speed impacts and minimize a rough ride.
Strong and durable: 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 extremes: large twin-tube body filled with all-weather fluid for cooler operation and internal temperatures from -40 to 248°F.
Reduces fade: nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixing that causes foaming and damping fade.
Smoother ride: polyurethane rebound bumper, rubber bushings, and a fluon-banded piston help absorb harshness and sharpen response.
A low-friction, self-lubricating seal retains gas and oil for quicker rebound. Backed by Rancho's Limited Lifetime Warranty.
This part cross-references / interchanges with the following part numbers:
813075, 929504B, RS5287, 23209G, N8041, 87150
Frequently Asked Questions
What vehicles does the Rancho RS55287 fit?
It's a direct-fit rear shock for the 2004-2019 and 2021-2025 Ford F-150 and the 2006-2008 Lincoln Mark LT. Check the Buyer's Guide tab to confirm engine-level fitment for your vehicle.
Is this a front or rear shock?
The RS55287 is cataloged as a rear-position suspension shock absorber for the listed applications.
What is Cross Tuned technology?
It's Rancho's exclusive tuning that pairs a rebound valving system with an advanced compression phase, designed to improve overall handling and performance both on and off road.
How does it hold up to heat and rough use?
A large twin-tube body filled with all-weather fluid supports cooler operation and internal temperatures from -40 to 248°F, and the 16mm nitro-carburized rod resists scuffs and corrosion.
Should I replace shocks in pairs?
This listing is for one shock. Replacing both sides on an axle together as a matched pair is recommended for balanced, even ride control.
Take on rough terrain with the Rancho RS7MT RS77198 Rear Suspension Shock Absorber, an application-tuned monotube shock built for precision on-road and off-road handling. It installs as a direct-fit...
WARNING:
These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
