Built for half-ton pickups that tow, haul and plow, the Monroe shock absorber 552001 from the Magnum Severe Service line is designed to help keep the rear of your truck controlled under load. This rear unit is a replacement for the 2007-2025 Chevrolet Silverado 1500 and 2007-2025 GMC Sierra 1500, as well as the 2019 Chevrolet Silverado 1500 LD and the 2019 GMC Sierra 1500 Limited. See the "Vehicles it fits" section for engine-specific details.
Monroe designed its Magnum light truck shocks specifically for hardworking half-ton trucks. Monotube technology is aimed at a comfortable ride, and a PTFE-coated bearing protects the rod guide.
- Monotube technology: designed to improve vehicle control over bumps, dips and potholes on vehicles that were originally equipped with monotube shocks and struts.
- Rod and seal protection: the PTFE-coated bearing guards the rod guide to help reduce damage to the seal. A nitrocarburized piston rod is built for durability and long service life, and a plastic dirt shield helps keep dirt and debris away from the shock rod.
- Nitrogen gas charge: helps keep the tires in contact with the road by reducing aeration and shock fade, which supports ride and handling.
- OE all-weather fluid: contains special additives to assist in extreme temperatures and help reduce oil breakdown.
The design also helps reduce friction between the piston and the pressure tube. This is intended to sharpen response to changing road surfaces. Signs a suspension shock absorber may need replacing include excessive bouncing after bumps, increased body sway, visible fluid leaks and uneven tire wear. For a complete four-corner ride control upgrade, Monroe suggests pairing it with a pair of Monroe Magnum Loaded Strut Assemblies (sold separately).
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Frequently Asked Questions
Which trucks does the Monroe rear shock absorber 552001 fit?
It is listed for the 2007-2025 Chevrolet Silverado 1500, the 2007-2025 GMC Sierra 1500, the 2019 Chevrolet Silverado 1500 LD and the 2019 GMC Sierra 1500 Limited. See the "Vehicles it fits" section for engine details.
Is this shock suited to towing, hauling and plowing?
Yes. The Magnum Severe Service line is designed specifically for hardworking half-ton trucks that tow, haul and plow.
What does the nitrogen gas charge do?
It helps keep the tires in contact with the road by reducing aeration and shock fade, which supports ride and handling.
How is the piston rod protected?
A PTFE-coated bearing protects the rod guide to help reduce seal damage. The piston rod is nitrocarburized for durability, and a plastic dirt shield helps keep debris off the rod.
Should I replace both rear shocks at the same time?
Replacing rear shocks in pairs is commonly recommended for balanced ride control. For a full four-corner setup, Monroe pairs this shock with Magnum Loaded Strut Assemblies, which are sold separately.
