Dial in the ride your heavy-duty truck needs with the Rancho RS9000XL RS994381 Shock Absorber, a nine-position adjustable rear shock built for hardworking vehicles that tow, haul, or head off road. It is a direct-fit replacement for the rear of the 2011-2019 Chevrolet Silverado 2500 HD, 2011-2018 Chevrolet Silverado 3500 HD, 2011-2019 GMC Sierra 2500 HD, and 2011-2018 GMC Sierra 3500 HD.
Now in its fourth generation, the RS9000XL pairs an easy-to-adjust knob with integrated bottom mounts for added strength. The knob lets you tailor damping and firmness for on-road or off-road use.
Signs a rear suspension shock absorber may need replacing include excessive bouncing after bumps, a harsh or unsettled ride, fluid leaking from the body, and uneven tire wear. Replacing rear shocks as a pair is recommended for balanced handling. Backed by Rancho's Limited Lifetime Warranty. See the "Vehicles it fits" section for engine details.
Interchange: RS999381
This part cross-references / interchanges with the following part numbers:
Does the Rancho RS994381 fit my truck?
It is listed for the rear of the 2011-2019 Chevrolet Silverado 2500 HD, 2011-2018 Chevrolet Silverado 3500 HD, 2011-2019 GMC Sierra 2500 HD and 2011-2018 GMC Sierra 3500 HD. See the "Vehicles it fits" section for engine details.
How does the adjustment knob work?
A nine-position knob lets you customize damping control and firmness, so you can set the shock for on-road driving or off-road use.
What does the nitrogen gas charge do?
The shock is pressurized with nitrogen gas at 45 or 60 PSI to minimize air-to-oil mixing, which helps reduce damping fade and fluid foaming.
What are signs a rear shock may need replacing?
Excessive bouncing after bumps, an unsettled ride, fluid leaking from the body, or uneven tire wear may be signs of a worn shock. Inspect the suspension to confirm the cause before replacing.
What warranty does the RS994381 carry?
It comes with Rancho's Limited Lifetime Warranty.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
