2021 GMC Sierra 3500 HD Suspension Parts
Choose your Part Name for your 2021 GMC Sierra 3500 HD
Air Suspension Compressor Kit
Air Suspension Helper Spring
Air Suspension Helper Spring Kit
Leaf Helper Spring
Leaf Spring Axle U-Bolt Kit
Shock Absorber Set
Suspension Control Arm
Suspension Control Arm Kit
Suspension Control Arm and Ball Joint Assembly
Suspension Leaf Spring Block Kit
Suspension Leveling Kit
Suspension Lift Kit
Suspension Rubber Helper Spring Kit
Suspension Shock Absorber
Suspension Shock Absorber Reservoir Mount
Suspension Shock Absorber Set
Suspension Stabilizer Bar Assembly
Torsion Bar Key
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Product
Price
- Weight Capacity 8600 lbs.
- Suspension Enhancement System; Weight Capacity 8600 lbs.; Rear;
- Suspension Enhancement System
- Product Attributes:
- Usage:
- Heavy Duty Truck
- Medium Duty Truck
- Axle Style: N/a
- Usage:
-
Features:
- Eliminate Suspension Sag And Cushion Road Shock
- Reduce Sway And Improve Roll Stability
- Easy To Install With Basic Hand Tools
- Improves Roll Control
- Trouble And Maintenance Free
- Satisfaction Guarantee And Lifetime Warranty
- Used To Carry Heavy Cargo Or Towing Trailers
- Leaders In Rubber Spring Technology Since 1965
- Timbren Suspension Kits (SES Kits) are designed to enhance the suspension of your vehicle. Easiest to use: Rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions. Easiest to maintain: There are no airlines or fittings to allow leaks. Simply bolt the kit on and you are set for a lifetime of trouble free suspension.Easiest to install: There are no holes to drill, no airlines to route and SES Kits can be installed in a matter of minutes using basic hand tools. The softer ride quality of todays trucks and the mediocre suspensions found on most trailers can cause excessive trailer sway, instability and suspension settling.Timbrens high performance suspension packages will ensure added safety and peace of mind.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 2021 - GMC Sierra 3500 HD | Rear |
- Weight Capacity 8000 lbs.; Severe Service-Slide-In Camper Or Salt Spreader
- Suspension Enhancement System; Weight Capacity 8000 lbs.; Rear; Severe Service-Slide-In Camper Or Salt Spreader;
- Suspension Enhancement System
- Product Attributes:
- Usage:
- Heavy Duty Truck
- Medium Duty Truck
- Axle Style: N/a
- Usage:
-
Features:
- Eliminate Suspension Sag And Cushion Road Shock
- Reduce Sway And Improve Roll Stability
- Easy To Install With Basic Hand Tools
- Improves Roll Control
- Trouble And Maintenance Free
- Satisfaction Guarantee And Lifetime Warranty
- Used To Carry Heavy Cargo Or Towing Trailers
- Leaders In Rubber Spring Technology Since 1965
- Timbren Suspension Kits (SES Kits) are designed to enhance the suspension of your vehicle. Easiest to use: Rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions. Easiest to maintain: There are no airlines or fittings to allow leaks. Simply bolt the kit on and you are set for a lifetime of trouble free suspension.Easiest to install: There are no holes to drill, no airlines to route and SES Kits can be installed in a matter of minutes using basic hand tools. The softer ride quality of todays trucks and the mediocre suspensions found on most trailers can cause excessive trailer sway, instability and suspension settling.Timbrens high performance suspension packages will ensure added safety and peace of mind.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 2021 - GMC Sierra 3500 HD | Rear |
- Weight Capacity 6000 lbs.
- Suspension Enhancement System; Weight Capacity 6000 lbs.; Front;
- Suspension Enhancement System
- Product Attributes:
- Usage: Medium Duty Truck
- Axle Style: N/a
-
Features:
- Eliminate Suspension Sag And Cushion Road Shock
- Reduce Sway And Improve Roll Stability
- Easy To Install With Basic Hand Tools
- Improves Roll Control
- Trouble And Maintenance Free
- Satisfaction Guarantee And Lifetime Warranty
- Leader In The Snow Plow Industry
- Leaders In Rubber Spring Technology Since 1965
- Timbren Suspension Kits (SES Kits) are designed to enhance the suspension of your vehicle. Easiest to use: Rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions. Easiest to maintain: There are no airlines or fittings to allow leaks. Simply bolt the kit on and you are set for a lifetime of trouble free suspension.Easiest to install: There are no holes to drill, no airlines to route and SES Kits can be installed in a matter of minutes using basic hand tools. The softer ride quality of todays trucks and the mediocre suspensions found on most trailers can cause excessive trailer sway, instability and suspension settling.Timbrens high performance suspension packages will ensure added safety and peace of mind.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 2021 - GMC Sierra 3500 HD | Front |
- Weight Capacity 8600 lbs.
- Suspension Enhancement System; Weight Capacity 8600 lbs.; Rear;
- Suspension Enhancement System
- Product Attributes:
- Usage:
- Heavy Duty Truck
- Medium Duty Truck
- Axle Style: N/a
- Usage:
-
Features:
- Eliminate Suspension Sag And Cushion Road Shock
- Reduce Sway And Improve Roll Stability
- Easy To Install With Basic Hand Tools
- Improves Roll Control
- Trouble And Maintenance Free
- Satisfaction Guarantee And Lifetime Warranty
- Used To Carry Heavy Cargo Or Towing Trailers
- Leaders In Rubber Spring Technology Since 1965
- Timbren Suspension Kits (SES Kits) are designed to enhance the suspension of your vehicle. Easiest to use: Rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions. Easiest to maintain: There are no airlines or fittings to allow leaks. Simply bolt the kit on and you are set for a lifetime of trouble free suspension.Easiest to install: There are no holes to drill, no airlines to route and SES Kits can be installed in a matter of minutes using basic hand tools. The softer ride quality of todays trucks and the mediocre suspensions found on most trailers can cause excessive trailer sway, instability and suspension settling.Timbrens high performance suspension packages will ensure added safety and peace of mind.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 2021 - GMC Sierra 3500 HD | Rear |
- Weight Capacity 6000 lbs.
- Suspension Enhancement System; Weight Capacity 6000 lbs.; Front;
- Suspension Enhancement System
- Product Attributes:
- Usage: Medium Duty Truck
- Axle Style: N/a
-
Features:
- Eliminate Suspension Sag And Cushion Road Shock
- Reduce Sway And Improve Roll Stability
- Easy To Install With Basic Hand Tools
- Improves Roll Control
- Trouble And Maintenance Free
- Satisfaction Guarantee And Lifetime Warranty
- Leader In The Snow Plow Industry
- Leaders In Rubber Spring Technology Since 1965
- Timbren Suspension Kits (SES Kits) are designed to enhance the suspension of your vehicle. Easiest to use: Rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions. Easiest to maintain: There are no airlines or fittings to allow leaks. Simply bolt the kit on and you are set for a lifetime of trouble free suspension.Easiest to install: There are no holes to drill, no airlines to route and SES Kits can be installed in a matter of minutes using basic hand tools. The softer ride quality of todays trucks and the mediocre suspensions found on most trailers can cause excessive trailer sway, instability and suspension settling.Timbrens high performance suspension packages will ensure added safety and peace of mind.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 2021 - GMC Sierra 3500 HD | Front |
- Rear; Self-Adjusting Suspension Stabilizing System; Provides 2000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Includes Poly Spring Pad For Use w/Dual Rear Wheel Chassis Cabs~May Be Used On Models Equipped w/Top Overload Spring~Poly Spring Pad PN[PSP-19] Included
- SuperSprings; Rear; Self-Adjusting Suspension Stabilizing System; Provides 2000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Includes Poly Spring Pad;
- SuperSprings
-
Features:
- Sold as a pair left and right
- Requires no maintenance
- Proudly made in the U.S.A.
- Self Adjusting Suspension Stabilizing System
- Provides 2000 Pounds Additional Load Leveling Ability
- Reduces Body Roll Up To 30 Pct Without Compromising Ride Quality
- Works In Conjunction w/Original Equipment Leaf Spring Assembly
- Adjustable Shackles Allow Installation To Suit Various Needs
- Typical Installation Completed In Approximately One Hour
- SAE 5160H 51 Pct Alloy/60 Pct Carbon High Grade Steel
- Shot Peened To Relieve Spring Stress And Extend Product Life
- Never Load Any Vehicle Beyond The Manufacturers GVWR
- SuperSprings(R) are a unique and patented self-adjusting suspension stabilizing system for vehicles with rear leaf springs, designed to level loads and reduce body roll. SuperSprings(R) provide users extra load support and reduce body roll without compromising ride quality. They are manufactured using a variety of different sized springs to support multiple applications. All SuperSprings(R) are manufactured in the U.S.A. from SAE5160H high grade, shot peened steel.
Additional Fitment Information:
| Vehicle | Sub Model |
|---|---|
| 2021 - GMC Sierra 3500 HD | AT4 |
- Rebel Kits Are Two Piece Unit Attached Both Top And Bottom; Allows Unlimited Travel; Capacity 2600 lbs. At 50 Percent Compression; Do Not Exceed GVWR; Variable Load
- SumoSprings; Rebel Kits Are Two Piece Unit Attached Both Top And Bottom; Allows Unlimited Travel; Capacity 2600 lbs. At 50 Percent Compression; Do Not Exceed GVWR; Variable Load;
- SumoSprings
- Product Attributes:
- Max Load: 2600 Lbs.
-
Features:
- Sold as a pair left and right
- Requires no maintenance
- Proudly made in the U.S.A.
- Enhances Load Carrying Ability
- 2600 Pounds Capacity At 50 Percent Compression
- Reduces And Stabilizes Sway
- Improves Overall Driver Control And Ride Comfort
- Compress Up To 80 Pct Original Height With Full Memory Rebound
- 1 Pc. Attached On Top/Bottom Will Stretch 50 Pct Of Body Height
- Progressive Spring Rate
- Made From Proprietary And Patented Microcellular Urethane
- Worlds Only Leak Proof Air Spring
- Never Load Any Vehicle Beyond The Manufacturers GVWR
- SumoSprings(R) are a patented suspension product designed to enhance load carrying ability, stabilize sway, and improve overall driver control and ride comfort. They are maintenance free, do not leak air, and do not require airlines or compressors. SumoSprings(R) are manufactured in a variety of heights, diameters and densities to support multiple front and rear applications. They are manufactured from proprietary closed micro-cellular urethane providing a smooth and progressive spring rate.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 2021 - GMC Sierra 3500 HD | Rear |
- Rear; Self-Adjusting Suspension Stabilizing System; Provides 3000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Includes Poly Spring Pad
- SuperSprings; Rear; Self-Adjusting Suspension Stabilizing System; Provides 3000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Includes Poly Spring Pad;
- SuperSprings
-
Features:
- Sold as a pair left and right
- Requires no maintenance
- Proudly made in the U.S.A.
- Self Adjusting Suspension Stabilizing System
- Provides 3000 Pounds Additional Load Leveling Ability
- Reduces Body Roll Up To 30 Pct Without Compromising Ride Quality
- Works In Conjunction w/Original Equipment Leaf Spring Assembly
- Adjustable Shackles Allow Installation To Suit Various Needs
- Typical Installation Completed In Approximately One Hour
- SAE 5160H 51 Pct Alloy/60 Pct Carbon High Grade Steel
- Shot Peened To Relieve Spring Stress And Extend Product Life
- Never Load Any Vehicle Beyond The Manufacturers GVWR
- SuperSprings(R) are a unique and patented self-adjusting suspension stabilizing system for vehicles with rear leaf springs, designed to level loads and reduce body roll. SuperSprings(R) provide users extra load support and reduce body roll without compromising ride quality. They are manufactured using a variety of different sized springs to support multiple applications. All SuperSprings(R) are manufactured in the U.S.A. from SAE5160H high grade, shot peened steel.
Additional Fitment Information:
| Vehicle | Sub Model |
|---|---|
| 2021 - GMC Sierra 3500 HD | AT4 |
- Rear; Self-Adjusting Suspension Stabilizing System; Provides 1000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Includes Poly Spring Pad
- SuperSprings; Rear; Self-Adjusting Suspension Stabilizing System; Provides 1000 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Includes Poly Spring Pad;
- SuperSprings
-
Features:
- Proudly Made In The U.S.A.
- Requires No Maintenance
- Self Adjusting Suspension Stabilizing System
- Provides 2000 Pounds Of Load Leveling Ability
- Reduces Body Roll Up To 30 Pct Without Compromising Ride Quality
- Works In Conjunction With Original Equipment Spring Pack
- Adjustable Shackles Allow Installation To Suit Various Needs
- Typical Installation Completed In Approximately One Hour
- SAE 5160H 51 Pct Alloy/60 Pct Carbon High Grade Steel
- Shot Peened To Relieve Spring Stress And Extend Product Life
- Never Load Any Vehicle Beyond The Manufacturers GVWR
- SuperSprings are a unique and patented Self-adjusting suspension stabilizing system. They provide users extra load support and reduced body roll without compromising the vehicle ride.
Additional Fitment Information:
| Vehicle |
|---|
| 2021 - GMC Sierra 3500 HD |
- Rear; Self-Adjusting Suspension Stabilizing System; Provides 1650 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Includes Poly Spring Pad
- SuperSprings; Rear; Self-Adjusting Suspension Stabilizing System; Provides 1650 lbs Additional Load Leveling Ability; Do Not Exceed GVWR; Includes Poly Spring Pad;
- SuperSprings
-
Features:
- Sold as a pair left and right
- Requires no maintenance
- Proudly made in the U.S.A.
- Self Adjusting Suspension Stabilizing System
- Provides 1650 Pounds Additional Load Leveling Ability
- Reduces Body Roll Up To 30 Pct Without Compromising Ride Quality
- Works In Conjunction w/Original Equipment Leaf Spring Assembly
- Adjustable Shackles Allow Installation To Suit Various Needs
- Typical Installation Completed In Approximately One Hour
- SAE 5160H 51 Pct Alloy/60 Pct Carbon High Grade Steel
- Shot Peened To Relieve Spring Stress And Extend Product Life
- Never Load Any Vehicle Beyond The Manufacturers GVWR
- SuperSprings(R) are a unique and patented self-adjusting suspension stabilizing system for vehicles with rear leaf springs, designed to level loads and reduce body roll. SuperSprings(R) provide users extra load support and reduce body roll without compromising ride quality. They are manufactured using a variety of different sized springs to support multiple applications. All SuperSprings(R) are manufactured in the U.S.A. from SAE5160H high grade, shot peened steel.
Additional Fitment Information:
| Vehicle | Sub Model |
|---|---|
| 2021 - GMC Sierra 3500 HD | AT4 |
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