Rancho RS90000XL 2.5-4″ Rear Lift Shocks for 1988-1999 Chevy K1500 4WD

Description
Rancho RS90000XL 2.5-4″ Rear Lift Shocks for 1988-1999 Chevy K1500 4WD

Rancho RS90000XL 2.5-4″ Rear Lift Shocks for 1988-1999 Chevy K1500 4WD

Part Number: RS999190

Summary: The Rancho RS9000XL series provides industry-leading versatility for the Chevy K1500 and GMC Yukon, featuring a globally recognized 9-position manual adjustment knob. This Tier 2 adjustable shock allows owners to instantly tune damping levels to compensate for varying payloads, towing demands, or off-road conditions. Engineered for vehicles with 2.5 to 4 inches of rear lift, these shocks transition seamlessly from a plush street ride to firm, controlled performance for heavy-duty applications.

Features

• 9-Position Tuning Knob: A manual adjustment dial provides nine distinct levels of damping resistance to ensure the perfect ride quality for towing, hauling, or daily driving.
• Large Shock Body: A massive 2.75-inch diameter reserve tube provides increased oil capacity to ensure consistent cooling and reduced fade during extreme use.
• Nitrogen Gas Charged: High-pressure gas optimization provides immediate response to road irregularities to ensure tire-to-road contact is maintained in technical terrain.
• Protective Boot: A heavy-duty liquid metallic finish and included dust boot provide a secondary layer of protection for the piston rod to ensure long-term seal integrity.

Technical Specifications

Fitment

• 1988-1999 Chevy K1500 4WD
• 1992-1999 GMC Yukon 4WD
• Note: Fits 4-Door models equipped with Rancho Suspension systems. Configured for 2.5-4″ of rear lift.

What’s Included

• Includes 2 Shocks
• Protective Dust Boots
• Mounting Hardware/Bushings

Why Choose This Product?

• Engineering Advantage: Unlike “one-size-fits-all” shocks, the RS9000XL utilizes a tri-tube design and adjustable valving that puts the driver in total control of the vehicle’s suspension harmonics.
• Performance Benefit: Eliminates the compromise between comfort and capability, allowing you to firm up the rear end for heavy trailers and soften it for unladen highway cruising.

Related Products

RS5000X (Rear):
Rancho RS5000X 2.5-4" Rear Lift Shocks for 1988-1999 Chevy K1500 4WD

RS5000X (Front):
Rancho RS5000X 2.5-4" Front Lift Shocks for 1988-1999 Chevy K1500 4WD

Front Only (Same Series):
Rancho RS90000XL 2.5-4" Front Lift Shocks for 1988-1999 Chevy K1500 4WD

RS5000X (Kit):
Rancho RS5000X 2.5-4" Lift Shocks for 1988-1999 Chevy K1500 4WD

RS90000XL (Kit):
Rancho RS90000XL 2.5-4" Lift Shocks for 1988-1999 Chevy K1500 4WD

Frequently Asked Questions

How do I adjust the damping on these shocks?
The RS9000XL features a manual 9-position knob located at the base of the shock body. Simply turn the dial to your desired setting—lower numbers for a softer ride and higher numbers for firmer control.

Do these shocks provide the lift for my truck?
No, these shocks do not create lift. They are specifically lengthened and valved to function correctly on vehicles already equipped with a 2.5 to 4-inch rear lift kit.

Can I use these on a 2WD Chevy K1500?
These specific shocks are engineered for 4WD (K-Series) chassis geometry and should only be installed on 4WD models as specified in the fitment data.