2021 GMC Sierra 3500 HD Rear Shock and Struts
Your 2021 GMC Sierra 3500 HD might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Rear Shock and Struts you desperately need.
We currently carry 6 Rear Shock and Struts to choose from for your 2021 GMC Sierra 3500 HD, and our inventory prices range from as little as $76.99 up to $236.99.
On top of low prices, Advance Auto Parts offers 3 different trusted brands of Rear Shock and Struts for the 2021 GMC Sierra 3500 HD. We only sell parts from trusted brands like Monroe so that you can find quality parts you can count on.
Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 63 reviews on our Rear Shock and Struts for the 2021 GMC Sierra 3500 HD from previous customers.
Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Rear Shock and Struts stock in-person!
Rear Shock and Struts for Your 2021 GMC Sierra 3500 HD
Monroe – Gas-Magnum Shock Absorber (Part No.34811)
from
$104.99
Designed for midsize and full-size trucks and vans, Monroe® Gas-Magnum® shock absorbers provide firm control without a harsh ride. With up to twice the fluid capacity of standard 1-in. bore shocks, they work more efficiently with less effort.
Product Features:
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Product Features:
- DESIGNED FOR TRUCKS AND VANS — Engineered for hardworking full-size trucks and vans and features full-displaced valving on compression cycles to deliver controlled ride and handling
- BUILT TO LAST — Heavy-duty nitrocarburized rod (non-dust shield units only) and sintered iron piston enhance durability for longer service life while self-lubricating fluid seal reduces friction against piston rod to reduce wear
- CONSISTENT RIDE — OE all-weather fluid contains special modifiers to handle extreme temperatures and help reduce friction and ensure smooth rod reaction
- IMPROVES PERFORMANCE — Nitrogen gas-charge maintains tire-to-road contact for improved ride and handling by reducing aeration and shock fade
- LONGER SERVICE LIFE — Larger bore and bigger 2-in. reserve tube work together to hold more oil for greater capacity to allow the shock to work efficiently for controlled ride and longer service life
- Nitrogen Gas Charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
- Sintered Iron Piston: Stronger than traditional metals, enhances durability for longer service life.
- Special Seal: ‘Self-lubricating’ fluid seal designed to retain gas without excessive wear or friction.
Monroe – Reflex Light Truck Shock Absorber (Part No.911303)
from
$103.99
Ideal for vehicles with a higher center of gravity, Monroe® Reflex® light truck shock absorbers feature ASD valving technology that automatically adjusts the unit to absorb the impact, helping to reduce vehicle roll and dive.
Product Features:
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Product Features:
- IMPROVES STABILITY — ASD (Acceleration Sensitive Damping) valving technology adjusts to impacts, reducing roll and dive for vehicles with a higher center of gravity
- EXCEPTIONAL HANDLING — Full displaced valving, tuned specifically to each vehicle, adjusts to road extremes while the larger bore provides more efficient damping control to provide consistency and a smooth ride
- CONSISTENT RIDE — OE all-weather fluid contains special additives to assist with extreme temperatures and help reduce oil breakdown while larger reserve tube holds more fluid to run cooler
- CONTROL AND DURABILITY — Fluon-banded piston provides consistent sealing between piston and pressure tube for better control and increased durability
- IMPROVES PERFORMANCE — Nitrogen gas charge maintains tire-to-road contact for improved ride and handling by reducing aeration
- 2-1/4 inch or 2 inch Diameter Reserve Tube: Allows more fluid carrying capacity for a cooler running unit.
- 1-3/8 inch Bore: Lower operating pressure than standard 1 inch bore units
- 5/8 inch Piston Rod: Heavy-duty nitrocarburized rod for long service life. On non-dust shield units only
- Special Seal: ‘Self-lubricating’ fluid seal designed to retain gas without excessive wear or friction.
Rancho – RS5000X Shock Absorber (Part No.RS55379)
from
$83.99
Featuring a unique, exclusive valving system and advanced compression functionality, Rancho® RS5000®X shocks deliver improved overall on- and off-road handling and performance.
Product Features:
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Product Features:
- IMPROVED HANDLING AND PERFORMANCE — Cross Tuned technology featuring exclusive rebound valving system and advanced compression phase improves overall handling and performance on and off road
- MINIMIZES ROUGH RIDE — Exclusive Progressive Engagement Valving is custom-tuned for each vehicle to help reduce initial impacts at low speeds and minimizes a rough ride
- STRONG AND DURABLE — Features a 16mm nitro-carburized piston rod to resist scuffs & corrosion, double-welded loops at stress areas, 35mm sintered iron piston for enhanced structural integrity and polyvinyl protective boot
- HANDLES EXTREME TEMPERATURE CHANGES — Large twin-tube body filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F
- SMOOTH PERFORMANCE — Polyurethane rebound bumper and rubber bushings help absorb ride harshness while the fluon-banded piston enhances responsiveness to changing road conditions for an overall smoother ride
- REDUCES FADE — Nitrogen gas pressurized to 150 PSI to minimize air-to-oil mixture to reduce damping performance fade and foaming
- MAINTAINS VEHICLE CONTROL — Compression Control Valve is custom-tuned for each vehicle to regulate fluid transfer to absorb impacts without disc flutter and help maintain shock motion control
- BUILT TO LAST — Low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression while the application-specific piston delivers heightened control of shock motion due to the expanded piston area
- Rebound Bumper
Rancho – RS9000XL Shock Absorber (Part No.RS999379)
from
$141.99
Get premium control and performance with Rancho RS9000®XL shocks. Recognized as the first nine-position manually adjustable ride control series in the off-road market, RS9000XL shocks are ideal for on- and off-road use, towing and more.
Product Features:
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Product Features:
- NINE LEVELS OF PERFORMANCE — Nine-position easy-to-adjust knob allows customized damping control and firmness for on-road and off-road flexibility
- DESIGNED FOR HARDWORKING VEHICLES — Ideal for stock or lifted trucks, SUVs and Jeeps that tow, haul or go off road
- INDUSTRY FIRST — Recognized as the first nine-position manually adjustable shock series in the off-road market
- REDUCES FADE — Nitrogen gas pressurized to 120 PSI to minimize air-to-oil mixture and reduce damping performance fade and foaming
- STRONG AND DURABLE — Features an application-specific 18mm nitro-carburized piston rod to resist scuffs and corrosion, double-welded loops at stress areas and 1.25-in. sintered iron piston for enhanced structural integrity
- HANDLES EXTREME TEMPERATURE CHANGES — Up to 2.75-in. tri-tube body (application specific) filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F
- SMOOTH PERFORMANCE — Polyurethane rebound bumper and bushings and graphite-filled fluon-banded piston help absorb ride harshness and enhance responsiveness to changing road conditions for an overall smoother ride
- BUILT TO LAST — Low-friction, self-lubricating seal retains gas and oil for quicker rebound and smoother compression while the long-lasting premium liquid metallic finish and polyvinyl protective boot ensures long life
Monroe – Gas-Magnum Shock Absorber (Part No.34812)
from
$76.99
Designed for midsize and full-size trucks and vans, Monroe® Gas-Magnum® shock absorbers provide firm control without a harsh ride. With up to twice the fluid capacity of standard 1-in. bore shocks, they work more efficiently with less effort.
Product Features:
See More
Product Features:
- DESIGNED FOR TRUCKS AND VANS — Engineered for hardworking full-size trucks and vans and features full-displaced valving on compression cycles to deliver controlled ride and handling
- BUILT TO LAST — Heavy-duty nitrocarburized rod (non-dust shield units only) and sintered iron piston enhance durability for longer service life while self-lubricating fluid seal reduces friction against piston rod to reduce wear
- CONSISTENT RIDE — OE all-weather fluid contains special modifiers to handle extreme temperatures and help reduce friction and ensure smooth rod reaction
- IMPROVES PERFORMANCE — Nitrogen gas-charge maintains tire-to-road contact for improved ride and handling by reducing aeration and shock fade
- LONGER SERVICE LIFE — Larger bore and bigger 2-in. reserve tube work together to hold more oil for greater capacity to allow the shock to work efficiently for controlled ride and longer service life
- Nitrogen Gas Charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
- Sintered Iron Piston: Stronger than traditional metals, enhances durability for longer service life.
- Special Seal: ‘Self-lubricating’ fluid seal designed to retain gas without excessive wear or friction.
FOX Offroad Shocks – Hydraulic/Nitrogen Gas Charged, Without Reservoir, Silver Shock Body, Single (Part No.985-24-241)
from
$236.99
The aluminum bodied Performance Series 2.0 Reservoir smooth body shock delivers FOX industry leading and race dominating performance in an affordable, hassle-free bolt on package. Its heat reducing design includes a metal impacted clear anodized aluminum shock body that dissipates heat faster than a conventional steel body shock. Its external reservoir allows for increase oil and nitrogen capacity while delivering striking race look. The included black anodized reservoir mounting clamp and other components are CNC machined from 6061-T6 aluminum. The race developed high flow damping piston matched with application specific valving provides the Performance Series 2.0 Reservoir shock a predicable ride quality capable of handling the roughest road conditions.
Product Features:
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Product Features:
- Body Metal Impacted 6061-T6 Aluminum Will Resist Rust Over Time, Clear-Anodized For A Durable Finish
- Internal IFP Mono-Tube Reservoir Design Separates Shock Oil From The High-Pressure Nitrogen
- Components, Black-Anodized, CNC-Machined 6061-T6 Billet Aluminum
- Shaft, 5/8 Inch Hard Chrome Plated Heat-Treated Alloy Steel
- Race-Developed High-Flow Piston Design
- Application Specific Valving To Maximize Performance
- Seals, Redundant Sealing Pack System Main Seal, Wiper Seal, Scraper Seal
- Oil, JM92 Advanced Suspension Fluid For Improved Performance At Variable Temperatures
- Bushings Quiet Nitrile Rubber Allows For Increased Suspension Articulation
FAQs for 2021 GMC Sierra 3500 HD Rear Shock and Struts
What are the most popular Rear Shock and Struts for the 2021 GMC Sierra 3500 HD?
With 3 brands you can trust, our most popular Rear Shock and Struts for the 2021 GMC Sierra 3500 HD parts are:
