Rancho RS90000XL 2.5-4″ Rear Lift Shocks for 1981-1986 Chevy K10 4WD

Description
Rancho RS90000XL 2.5-4″ Rear Lift Shocks for 1981-1986 Chevy K10 4WD

Rancho RS9000XL 2.5-4″ Rear Lift Shocks for 1981-1986 Chevy K10 4WD

Part Number: RS999112

Summary: The Rancho RS9000XL series provides industry-leading adjustability for drivers who demand versatility from their Chevy K10. Featuring a 9-position manual tuning knob, these shocks allow you to instantly transition from a soft street ride to a firm setting optimized for heavy towing or off-road performance. Engineered for vehicles with 2.5 to 4 inches of rear lift, they offer a custom-tuned damping solution that adapts to your specific cargo and terrain requirements.

Features

• 9-Position Tuning: A manual adjustment knob provides nine levels of damping control to ensure the perfect balance between comfort and control for any environment.
• Large Shock Body: A 2.75-inch diameter reserve tube provides increased oil capacity to ensure cooler operating temperatures during heavy-duty use.
• Nitrogen Gas Charged: High-pressure gas optimization provides consistent valving response to ensure reduced aeration and shock fade.
• Protective Boot: A durable poly-vinyl accordion boot provides a high-strength barrier for the piston rod to ensure long-term seal integrity.

Technical Specifications

Fitment

• 1981-1986 Chevy K10 4WD
• Note: Configured for vehicles with 2.5″ to 4″ of rear lift height.

What’s Included

• Includes 2 Shocks
• Protective Dust Boots
• Mounting Hardware (where applicable)

Why Choose This Product?

• Engineering Advantage: Unlike “one-size-fits-all” shocks, the RS9000XL utilizes a sophisticated bypass system and manual dial to give the driver physical control over the internal valving.
• Performance Benefit: Eliminates the compromise between daily driving comfort and the stiffness required for hauling, providing a truly personalized ride quality.

Related Products

RS5000X (Rear):
Rancho RS5000X 2.5-4" Rear Lift Shocks for 1981-1986 Chevy K10 4WD

RS5000X (Front):
Rancho RS5000X 2.5-4" Front Lift Shocks for 1981-1986 Chevy K10 4WD

RS7MT (Rear):
Rancho RS7MT 2.5-4" Rear Lift Shocks for 1981-1986 Chevy K10 4WD

Front Only (Same Series):
Rancho RS90000XL 2.5-4" Front Lift Shocks for 1981-1986 Chevy K10 4WD

RS5000X (Kit):
Rancho RS5000X 2.5-4" Lift Shocks for 1981-1986 Chevy K10 4WD

RS90000XL (Kit):
Rancho RS90000XL 2.5-4" Lift Shocks for 1981-1986 Chevy K10 4WD

Frequently Asked Questions

How do I adjust the stiffness of these shocks?
The RS9000XL features a clearly marked 9-position knob at the base of the shock body. Simply turn the dial to setting 1 for the softest ride or setting 9 for maximum firmness.

Will these shocks lift my Chevy K10?
No, these shocks do not create lift. They are specifically valved and sized to function correctly on vehicles already equipped with a 2.5-inch to 4-inch rear lift kit.

What is the benefit of the larger 2.75-inch body?
The increased fluid capacity allows the shock to dissipate heat much faster than standard shocks, which prevents the oil from thinning and maintains consistent damping performance under stress.