Rancho 69-91 Chevrolet Blazer / Full Size Rear RS5000X Shock

When you're looking to replace the rear shocks on your 1969-1991 Chevrolet Blazer, or many other compatible trucks like the Ford F-150 or GMC Jimmy, the Rancho RS5000X shock absorber is a solid option. This shock is built to handle both everyday driving and more demanding conditions, aiming to give you a more controlled ride. It works by managing the suspension's up and down motion, which is key for keeping your tires in contact with the road.

What you get in this package is a single rear shock absorber, the RS55112, designed with Rancho's specific valving system. This system is tuned for each application to help absorb impacts smoothly and maintain control. The shock features a 16mm nitro-carburized piston rod that's tough against scuffs and corrosion, plus double-welded loops for extra strength where it counts. Inside, a 35mm sintered iron piston and a fluon-banded piston enhance responsiveness, while the large twin-tube body is filled with all-weather fluid that stays consistent even in extreme temperatures, from -40 to 248°F. This helps reduce the chance of the shock losing performance, or 'fading,' during hard use.

To help smooth out the ride, it includes a polyurethane rebound bumper and rubber bushings that absorb harshness. The nitrogen gas pressurization to 150 PSI also plays a role in preventing air from mixing with the oil, further reducing fade. Rancho backs this shock with a Limited Lifetime Warranty, giving you confidence in its durability.