Rancho RS90000XL 4″ Lift Shocks for 1988-1999 GMC K1500 4WD

Description
Rancho RS90000XL 4″ Lift Shocks for 1988-1999 GMC K1500 4WD

Rancho RS9000XL 4″ Lift Shocks for 1988-1999 GMC K1500 4WD

Part Number: RS999244 / RS999227

Summary: The Rancho RS9000XL series provides industry-leading adjustability for GMC K1500 owners seeking a versatile suspension solution. Featuring a 9-position manual tuning knob, these shocks allow you to instantly transition from a soft street ride to a firm setting for heavy towing or aggressive off-road use. Specifically configured for vehicles with a 4-inch lift, this set ensures optimal piston travel and ride control for your 4WD Yukon or K1500.

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: The 2.75-inch diameter reserve tube provides increased oil capacity to ensure cooler operating temperatures during heavy work cycles.
• Nitrogen Gas Charged: High-pressure gas optimization provides immediate response to road inconsistencies to ensure consistent tire-to-ground contact.
• Protective Boot: A heavy-duty red polyvinyl bellows provides a physical barrier for the shock rod to ensure long-term seal integrity against debris.

Technical Specifications

Fitment

• 1988-1999 GMC K1500 4WD
• 1992-1999 GMC Yukon 4WD
• Note: Designed for use with Rancho Suspension systems.

What’s Included

• Includes 4 Shocks (Full Front & Rear Set)
• Protective Red Dust Boots
• Required Installation Bushings and Washers

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for precise manual tuning without removing the shock, offering a custom-tailored suspension feel.
• Performance Benefit: Eliminates the compromise between comfort and capability, allowing the driver to stiffen the rear for hauling or soften the front for daily commuting.

Related Products

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

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

RS90000XL (Rear):
Rancho RS90000XL 4" Rear Lift Shocks for 1988-1999 GMC K1500 4WD

RS90000XL (Front):
Rancho RS90000XL 4" Front Lift Shocks for 1988-1999 GMC K1500 4WD

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

Frequently Asked Questions

How do I adjust the firmness of these shocks?
The RS9000XL features an easy-to-reach 9-position knob at the base of the shock body; simply turn the dial to your preferred setting (1 for softest, 9 for firmest).

Will these shocks work with any 4-inch lift kit?
While designed for 4-inch lifted applications, these specific part numbers are optimized for use with Rancho Suspension geometry on the K1500 platform.

Do these shocks help with towing stability?
Yes, by increasing the damping to a higher setting (7-9), you can significantly reduce sway and porpoising when towing a trailer or carrying heavy loads.