Rancho Suspension Shock Absorber P/N:RS55042
Smooth out the ride and keep your classic Ford truck's rear axle in check with the Rancho shock absorber RS55009, a rear-position unit from the RS5000X series. It installs as a direct-fit replacement for the 1970-1979 Ford F-100, 1975-1979 Ford F-150 and 1970-1979 Ford F-250, and it's built with Rancho's Cross Tuned technology — an exclusive rebound valving system paired with an advanced compression phase intended to improve handling on and off road.
A polyurethane rebound bumper, rubber bushings, fluon-banded piston and low-friction self-lubricating seal round out the design. Backed by Rancho's Limited Lifetime Warranty.
Interchange: RS5009 · 23143I · N8055
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
Is this the right shock absorber for a 1970-1979 Ford F-250?
It's a rear-position shock listed for the 1970-1979 Ford F-250 and other Ford trucks. Check the "Vehicles it fits" section to confirm your exact vehicle.
Is this a front or rear shock?
It is cataloged as a rear-position suspension shock absorber for the listed applications.
What is Rancho's Cross Tuned technology?
It combines an exclusive rebound valving system with an advanced compression phase, designed to improve overall on- and off-road handling and performance.
How is this Rancho absorber gas charged?
It's nitrogen gas pressurized to 150 PSI, which is intended to minimize air-to-oil mixing to help reduce damping performance fade and foaming.
Should I replace both rear shocks at once?
Replacing both shocks on the same axle as a matched pair is recommended for balanced, even damping. Confirm the quantity your vehicle needs before ordering.
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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.