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

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

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

Part Number: RS999128 / RS999190

Summary: The Rancho RS9000XL series provides the ultimate in ride control for your GMC C1500. Featuring a 9-position manual adjustment knob, these shocks allow you to instantly tune your suspension damping to match your specific driving environment, whether you are commuting or hauling heavy loads. Engineered for 4-inch lifted applications, these shocks deliver a custom-tailored ride quality that compensates for larger tire masses and altered suspension geometry.

Features

• MyRide 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping force to ensure the driver can switch between a soft street ride and firm performance for towing.
• 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 Pressurized: High-pressure gas charges provide a quicker response time and minimize aeration to ensure consistent performance across rough terrain.
• Heavy-Duty 18mm Nitro-Carburized Rod: A hardened piston rod provides superior structural integrity and resists scuffing to ensure long-term seal life.

Technical Specifications

Fitment

• 1988-1999 GMC C1500 2WD
• Note: Configured specifically for vehicles with 4-inch suspension lift kits.

What’s Included

• (2) Rancho RS9000XL Front Shocks
• (2) Rancho RS9000XL Rear Shocks
• Protective Red Dust Boots
• Mounting Hardware (Where Applicable)

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a 400% change in damping force, giving you the ability to compensate for varying vehicle weights and road conditions.
• Performance Benefit: Eliminates the “one size fits all” compromise of standard shocks, allowing the driver to dial in the exact firmness required for a stable, controlled ride.

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

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

RS90000XL (Front):
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

Frequently Asked Questions

How do I adjust the firmness of these shocks?
These shocks feature an external 9-position knob located at the base of the shock body that can be turned by hand to increase or decrease damping resistance.

Will these shocks lift my GMC C1500?
No, these shocks do not create lift. They are specifically valved and length-indexed to work with a vehicle that has already been equipped with a 4-inch lift kit.

Are the protective boots included?
Yes, all RS9000XL shocks include Rancho’s signature red protective boots to shield the piston rod from debris and moisture.