Rancho RS5000X Gas Shocks Front Pair for 1988-1999 GMC K1500 4WD w/2.5-4" lift

The core of this new and innovative shock from Rancho is the unique and patented rebound valving system and an advanced compression phase of the shock absorber. This proprietary process developed by the ride engineers at Rancho will elevate the overall handling and performance of your vehicle on and off-road. Each RS5000X shock is gas pressurized to 150 PSI.* The twin tube, gas pressurized shock has a variety of advantages including minimizing air-to-oil mixture that can cause foaming and shock fade. Gas pressurization also provides a mild boost of spring rate to the vehicle. The RS5000X series features a 2-1/4-inch diameter shock body. A larger shock body allows for increased fluid capacity to operate cooler and to increase vehicle control and performance at varying speeds and terrains. The RS5000X series combines a larger shock body with all-weather fluid, allowing the shock to withstand internal temperatures between -40 and 248 degrees Fahrenheit. The Rancho RS5000X series design includes patented progressive rebound and compression discs. At lower speeds or in the earlier stages of the shock's travel, an eccentric disc in the valve shim stacks will engage the valving at lower frequencies, helping to control the energy of motion as the cycle of the shock increases or decreases in its action. When hitting a pothole, off-road trail obstacle or similar activity, Rancho's Progressive Engagement Valving allows for early flow of fluid, helping to reduce harsh initial impacts and to control the flow of fluid in a progressive, gradual manner through the valving. During on- or off-road driving activities like washboarding or when travelling a rough fire road, the early flow of fluid helps to minimize a "rough" ride as the piston movement is able to glide through the initial travel motion of the shock with minimal ground impact or force. If needed, the Progressive Engagement Valving will further engage to maintain control and stability.

• Improved Handling & Performance: Reduces wheel shimmy, bump steer and vibration which helps minimize on- or off-road driver fatigue
• Accommodates Larger Tires: Engineered for vehicles with oversized wheels and tires
• Engineered to Last: Features protective boot to safeguard shock rod and oil seal
• Handles Extreme Temperature Changes: Twin-tube cellular gas design filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F
• Vehicle Compatibility: This fits your 1988-1999 K1500 K2500 4WD with 4" lift, 1995-1999 Tahoe 4WD, 1988-2000 K3500 with 4" Lift, 1992-1998 K2500 Suburban, 1992-1999 Yukon 4WD; For Rancho Suspension System That Uses Replacement Upper Control Arms