Rancho RS90000XL 4″ Rear Lift Shocks for 1988-1999 GMC C1500 2WD

Description
Rancho RS90000XL 4″ Rear Lift Shocks for 1988-1999 GMC C1500 2WD

Rancho RS9000XL 4″ Rear Lift Shocks for 1988-1999 GMC C1500 2WD

Part Number: RS999190

Summary: The Rancho RS9000XL series provides unparalleled flexibility for your GMC C1500, featuring a globally recognized 9-position manual tuning knob. This Tier 2 adjustable shock allows drivers to instantly transition between a soft street ride and a firm setting for heavy towing or off-road stability. Engineered to accommodate a 4-inch rear lift, these shocks solve the problem of “one size fits all” valving by putting damping control directly in the user’s hands.

Features

• 9-Position Tuning Knob: A manual adjustment dial provides nine levels of damping control to ensure the perfect ride quality for any terrain or load requirement.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased fluid capacity to ensure cooler operating temperatures during heavy-duty use.
• Nitrogen Gas Charged: High-pressure gas optimization provides a barrier between the oil and gas to ensure consistent performance by reducing aeration and shock fade.
• Heavy-Duty Piston: A 1.25-inch sintered iron piston provides structural integrity and precision valving to ensure long-term durability in demanding environments.

Technical Specifications

Fitment

• 1988-1999 GMC C1500 2WD
• 1992-1999 GMC Yukon
• Note: Fits 4-Door models equipped with Rancho Suspension systems.

What’s Included

• Includes 2 Shocks
• Required Bushings and Washers
• Protective Red Boot

Why Choose This Product?

• Engineering Advantage: Unlike standard shocks, the RS9000XL utilizes a massive body diameter and adjustable valving technology, allowing the hardware to adapt to the vehicle’s weight and cargo changes.
• Performance Benefit: Drivers gain the ability to dial in “firm” settings to eliminate sway while towing, or “soft” settings for daily commuting, resulting in a truly custom driving experience.

Related Products

RS5000X (Front):
Rancho RS5000X 4" Front Lift Shocks for 1988-1999 GMC C1500 2WD

RS5000X (Rear):
Rancho RS5000X 4" Rear Lift Shocks for 1988-1999 GMC C1500 2WD

Front Only (Same Series):
Rancho RS90000XL 4" Front Lift Shocks for 1988-1999 GMC C1500 2WD

RS5000X (Kit):
Rancho RS5000X 4" Lift Shocks for 1988-1999 GMC C1500 2WD

RS90000XL (Kit):
Rancho RS90000XL 4" Lift Shocks for 1988-1999 GMC C1500 2WD

Frequently Asked Questions

How do I adjust the firmness of these shocks?
The shocks feature a 9-position knob located at the base of the shock body; simply turn the dial to your desired setting—1 for the softest ride and 9 for the firmest.

Will these shocks create 4 inches of lift for my GMC?
No, these shocks do not create lift. They are specifically configured with the correct travel lengths to work on vehicles already equipped with a 4-inch rear lift kit.

Do I need special tools to install the RS9000XL?
No special tools are required for adjustment, and the installation follows standard OE replacement procedures using basic hand tools.