Rancho RS90000XL 2.5-4″ Rear Lift Shocks for 1969-1986 Chevy K-20 4WD

Description
Rancho RS90000XL 2.5-4″ Rear Lift Shocks for 1969-1986 Chevy K-20 4WD

Rancho RS9000XL 2.5-4″ Rear Lift Shocks for 1969-1986 Chevy K-20 4WD

Part Number: RS999112

Summary: The Rancho RS9000XL series provides industry-leading versatility for the Chevy K-20, featuring a globally recognized 9-position manual adjustment knob. This Tier 2 adjustable shock allows drivers to instantly tune damping levels to transition from a soft street ride to the firm control required for heavy towing or off-road excursions. Engineered to accommodate 2.5 to 4 inches of rear lift, these shocks solve the problem of “one size fits all” valving by putting ride control directly in the user’s hands.

Features

• MyRide 9-Position Tuning: A manual adjustment knob provides nine distinct levels of damping to ensure custom-tailored ride quality for any load or terrain.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased oil capacity to ensure cooler operating temperatures during sustained cycling.
• Nitrogen Gas Pressurized: High-pressure gas charge provides a barrier between the oil and air to ensure consistent performance by eliminating foam and aeration.
• Heavy-Duty Nitro-Carburized Rod: An 18mm diameter piston rod provides exceptional structural rigidity to ensure long-term durability in harsh environments.

Technical Specifications

Fitment

• 1969-1986 Chevy K-20 4WD
• Note: Configured for vehicles with 2.5-4″ of rear lift. Verified for Chevy K-20 4WD applications.

What’s Included

• Includes 2 Shocks
• Mounting Hardware (where applicable)
• Protective Red Boot

Why Choose This Product?

• Engineering Advantage: Rancho’s MyRide technology allows for a 400% change in damping force between setting 1 and 9, offering more flexibility than standard fixed-valve shocks.
• Performance Benefit: Drivers gain the ability to firm up the rear suspension for towing stability and soften it for daily commuting, all without removing the shocks from the vehicle.

Related Products

RS5000X (Front):
Rancho RS5000X 2.5-4" Front Lift Shocks for 1969-1986 Chevy K-20 4WD

RS5000X (Rear):
Rancho RS5000X 2.5-4" Rear Lift Shocks for 1969-1986 Chevy K-20 4WD

RS7MT (Rear):
Rancho RS7MT 2.5-4" Rear Lift Shocks for 1969-1986 Chevy K-20 4WD

Front Only (Same Series):
Rancho RS90000XL 2.5-4" Front Lift Shocks for 1969-1986 Chevy K-20 4WD

RS90000XL (Kit):
Rancho RS90000XL 2.5-4" Lift Shocks for 1969-1986 Chevy K-20 4WD

RS5000X (Kit):
Rancho RS5000X 2.5-4" Lift Shocks for 1969-1986 Chevy K-20 4WD

Frequently Asked Questions

How do I adjust the firmness of these shocks?
The RS9000XL features an external 9-position knob 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 increased firmness.

Are these shocks sold as a pair?
Yes, this specific SKU (2xRS999112_n121) includes two rear shocks for a complete axle installation.

Will these shocks lift my Chevy K-20?
No, these shocks do not create lift. They are specifically configured with the correct extended and compressed lengths to work with vehicles already equipped with a 2.5-inch to 4-inch rear lift kit.