Rancho RS55179 RS5000X Rear Shock for 1977-96 Ford Bronco/F-150/F-250

Vehicle Fitment

• 1977-1979 Ford F-250 (4WD/Stock)
• 1981-1996 Ford Bronco (4WD/Stock)
• 1981-1996 Ford F-150 (2WD/4WD/Stock)
• 1987-1991 Isuzu Trooper (4WD/Stock)

Features

• RS5000X Series gas-charged shock absorber
• Twin-tube internal design for enhanced damping
• Progressive Engagement valving for smoother ride quality
• Nitro-carburized piston rod for durability & corrosion resistance
• Protective red polyvinyl boot to shield rod and seal
• Internal rebound bumper to reduce harsh impacts
• Twin-tube body for increased fluid capacity and cooling
• Durable rubber bushings for vibration isolation

Specifications

• Part Number: RS55179
• Series: RS5000X Gas Shock
• Position: Rear (Driver/Passenger Side)
• Compressed Length: 13.76 in
• Extended Length: 22.28 in
• Stroke Length: 8.52 in
• Bore Diameter: 35 mm
• Type: Twin-tube, Non-adjustable gas charged
• Bushing Mounts: Loop / Stem
• Direct OE replacement fit

Included Components

• 1x Rancho RS5000X RS55179 Rear Shock Absorber
• 1x Protective shock boot
• Factory mounting bushings (installed)

Product Description

The Rancho RS55179 RS5000X rear shock absorber is a performance-oriented replacement shock engineered to provide a smoother, more controlled ride on both stock and mild terrain applications for classic trucks and SUVs. Designed with Rancho's RS5000X progressive engagement valving and gas-charged twin-tube construction, this shock enhances handling response while minimizing harsh initial impacts over rough surfaces. The Nitro-carburized piston rod and durable internal components help ensure long life and reliable damping performance in varying conditions.

This shock fits select older Ford and Isuzu vehicles like the 1977-1996 Ford Bronco and F-150, 1977-1979 Ford F-250, and 1987-1991 Isuzu Trooper, providing a direct OE fit for rear mounting positions. With its 35 mm bore and 8.52 in stroke, the RS55179 is suitable for stock suspension geometry and offers an upgrade over many worn-out factory shocks. Ideal for enthusiasts restoring or refreshing older 4WD vehicles, this Rancho shock offers balanced comfort and improved control for everyday driving and light off-road use.