Firm up highway tracking and stay composed on the trail with the Rancho RS5000X Suspension Shock Absorber (RS55042), a front-position damper that installs as a direct-fit replacement on 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 Buyer's Guide tab to confirm the engine and configuration for your truck.
- Cross Tuned technology: Rancho's exclusive rebound valving system and advanced compression phase are designed to improve overall on- and off-road handling and performance.
- Progressive Engagement Valving: custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimize a rough ride.
- Built strong: 16mm nitro-carburized piston rod resists scuffs and corrosion, double-welded loops at stress areas, a 35mm sintered iron piston, and a polyvinyl protective boot.
- All-weather twin-tube design: a large twin-tube body filled with all-weather fluid allows cooler operation and is rated to withstand internal temperatures of -40 to 248°F.
Nitrogen gas pressurized to 150 PSI helps minimize air-to-oil mixing to reduce damping fade and foaming, while the polyurethane rebound bumper and rubber bushings help absorb ride harshness. Backed by Rancho's Limited Lifetime Warranty.
Frequently Asked Questions
Which vehicles does the Rancho RS55042 fit?
It's a direct-fit front shock 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 Buyer's Guide tab to confirm your engine and configuration.
What position is this shock?
The RS55042 is a front-position suspension shock absorber for the listed Ford Super Duty applications.
What is Cross Tuned technology?
It's Rancho's exclusive rebound valving system paired with an advanced compression phase, designed to improve overall handling and performance both on and off road.
Is this shock gas-charged?
Yes. It's nitrogen gas pressurized to 150 PSI, which helps minimize air-to-oil mixing to reduce damping fade and foaming.
Should I replace shocks in pairs?
This listing is for one shock. Replacing shocks as a matched pair per axle is recommended for balanced, even ride control.
Write a Review