Rancho RS5000X Rear Shock Absorber for 1983-2011 Ford Ranger, Bronco II, & Mazda B-Series (RS55125)

Fits select 1983-2011 Ford Ranger, 1984-1990 Ford Bronco II, and 1994-2009 Mazda B-Series (B2300, B2500, B3000, B4000) trucks.

The Rancho RS5000X (MPN: RS55125) rear shock absorber is engineered to improve handling and reduce ride harshness on and off-road. Using Cross Tuned technology and exclusive Progressive Engagement Valving, this twin-tube shock is custom-tuned for each application to minimize initial impacts at low speeds while maintaining firm control during high-speed transitions. The large 2.25-inch body is nitrogen gas pressurized to 150 PSI, which reduces damping fade and oil foaming for consistent performance in demanding conditions.

• Precision Engineering: Features 16mm nitro-carburized piston rod for scuff and corrosion resistance, double-welded loops at stress areas, and a 35mm sintered iron piston for structural integrity.
• Smooth Damping: Polyurethane rebound bumpers and rubber bushings absorb ride harshness, while a fluon-banded piston enhances responsiveness to changing road surfaces.
• Temperature Resilient: Filled with all-weather fluid capable of withstanding internal temperatures from -40° to 248°F.
• Protective Design: Includes a durable polyvinyl protective boot to shield the rod and oil seal from debris.
• Specifications: 150 PSI gas pressure, 16mm rod diameter, 35mm piston bore, self-lubricating seal.