Rancho RS55042 RS5000X Front Shock for 2005-25 Ford Super Duty 4WD Stock Height

Vehicle Fitment

• 2005-2025 Ford F-250 Super Duty (Front, 4WD, Stock Height)
• 2005-2025 Ford F-350 Super Duty (Front, 4WD, Stock Height)
• 2005-2022 Ford F-450 Super Duty (Front, 4WD, Stock Height)
• 2005-2022 Ford F-550 Super Duty (Front, 4WD, Stock Height)

Features

• Rancho RS5000X™ series front shock absorber
• Progressive Engagement valving for improved ride smoothness
• Tuned compression control valve enhances road-handling response
• Gas-charged twin-tube design for consistent damping performance
• Large 2.25" shock body with increased fluid capacity
• 16 mm nitro-carburized piston rod resists corrosion
• 35 mm full-displaced bore for greater control and stability
• Protective red accordion boot included to shield rod/seal

Specifications

• Part Number: RS55042
• Brand: Rancho
• Series: RS5000X™
• Position: Front Shock Absorber
• Design: Gas-charged twin-tube
• Compressed Length: 13.85"
• Extended Length: 20.79"
• Travel Length: 6.94"
• Upper Mount: Stem / Stud type
• Lower Mount: Loop bushing & sleeve mount
• Boot Included: Yes (protective)

Included Components

• 1x Rancho RS5000X™ Front Shock Absorber (RS55042)

Product Description

The **Rancho RS55042** RS5000X™ front shock absorber is a direct-fit performance replacement designed for **2005-2025 Ford Super Duty trucks with 4WD and stock ride height**, including F-250, F-350, F-450, and F-550 models. Engineered with Rancho's Progressive Engagement valving and tuned compression control, this shock helps improve ride comfort and stability over bumps and rough surfaces while maintaining control on pavement and off-road. Rancho's proprietary gas-charged twin-tube construction and larger 2.25" shock body increase fluid capacity, supporting more consistent damping performance over varying driving conditions.

Built with a durable 16 mm nitro-carburized piston rod and a full-displaced 35 mm bore, the RS55042 resists corrosion and minimizes performance fade under load. The protective red accordion boot shields the rod and seal against debris, helping extend shock life. This shock absorber installs easily using OEM mounting points and retains stock ride height characteristics, making it a solid choice for both everyday driving and light off-road use, with the added confidence of Rancho's limited lifetime warranty.