Rancho RS5000X Rear Shock Absorber for Select 1988-2005 Chevrolet & GMC (RS55190)

Fits select 1988-2005 Chevrolet and GMC trucks and SUVs, including Blazer, Jimmy, Tahoe, and C/K-Series 1500/2500/3500 pickups.

The Rancho RS5000X series redefines twin-tube shock performance with its patented Progressive Engagement Valving (PEV). This application-specific system is custom-tuned to minimize initial impact at low speeds while maintaining firm control during high-speed compression. Built to withstand extreme environments, the twin-tube body is nitrogen-charged to 150 PSI, significantly reducing fluid foaming and damping fade during heavy-duty use or off-road excursions.

Engineered for durability, this shock features a 16mm nitro-carburized piston rod to resist corrosion and double-welded loops at high-stress mounting points. The large 35mm sintered iron piston increases the surface area for fluid control, ensuring smoother rebound and compression cycles even when temperatures range from -40 to 248°F.

• Gas-pressurized to 150 PSI to minimize aeration and shock fade
• 16mm nitro-carburized piston rod for enhanced structural integrity
• 35mm sintered iron piston delivers heightened motion control
• Cross-tuned technology for optimized handling on and off-road
• Polyurethane rebound bumper and rubber bushings for vibration isolation
• Includes polyvinyl protective boot to shield the rod and oil seal
• Operating temperature range: -40°F to 248°F
• Manufacturer Part Number: RS55190