Rear Shock Absorber for 2017-2026 Ford F-250 Super Duty & More - Rancho RS55047A

Smooth out the ride and keep your truck planted with the Rancho RS5000X Suspension Shock Absorber RS55047A, a Rancho shock absorber built for the rear position of the 2017-2025 Ford F-250 Super Duty and 2017-2025 Ford F-350 Super Duty. At its core is Rancho's exclusive Cross Tuned technology — a rebound valving system and advanced compression phase tuned to improve on- and off-road handling and performance.

• Minimizes rough ride: Progressive Engagement Valving is custom-tuned for each vehicle to help reduce initial low-speed impacts.
• 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 swings: Large twin-tube body filled with all-weather fluid runs cooler and withstands internal temperatures of -40 to 248°F.
• Reduces fade: Nitrogen gas pressurized to 150 PSI helps minimize air-to-oil mixing to cut damping fade and foaming.

A polyurethane rebound bumper, rubber bushings, and a fluon-banded piston help absorb harshness for a smoother ride, while a low-friction self-lubricating seal retains gas and oil. Backed by Rancho's Limited Lifetime Warranty. Sold individually; replace both sides together for balanced control.