Rancho Suspension Shock Absorber P/N:RS55378
Smooth out the ride and keep body motion in check with the Rancho RS5000X shock absorber RS55042, a direct-fit front damper for the 2005-2025 Ford F-250 Super Duty and F-350 Super Duty, plus the 2005-2024 Ford F-450 Super Duty and F-550 Super Duty (see the "Vehicles it fits" section for engine-level fitment). This Rancho shock absorber is a twin-tube design built around Rancho's Cross Tuned rebound valving and advanced compression phase, tuned per application for on- and off-road handling.
A low-friction, self-lubricating seal retains gas and oil, while the polyurethane rebound bumper and rubber bushings help absorb ride harshness. Backed by Rancho's Limited Lifetime Warranty.
Does the Rancho RS55042 shock fit my truck?
It's a front shock listed for the 2005-2025 Ford F-250 and F-350 Super Duty, and the 2005-2024 Ford F-450 and F-550 Super Duty. Check the "Vehicles it fits" section to confirm your vehicle.
Is this a front or rear shock absorber?
The catalog lists the RS55042 in the front position for the covered Super Duty applications.
What is Cross Tuned technology?
It is Rancho's rebound valving system combined with an advanced compression phase, tuned per application to improve handling and performance on and off road.
Is this shock gas-charged?
Yes. It is nitrogen gas pressurized to 150 PSI, which is designed to minimize air-to-oil mixing and reduce foaming and damping fade.
How many should I order?
Shocks are sold individually. Replacing both sides on an axle together as a matched pair is recommended for balanced ride control.
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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.