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2021 GMC Sierra 2500 HD

2021 GMC Sierra 2500 HD Helper Springs

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Showing 1 - 14 of 14 results
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Helper Spring, Set of 2
Part Number: S99SSA16
Guaranteed to Fit
$534.99
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD Denali All Engines
  • 2021 GMC Sierra 2500 HD Base All Engines
  • 2021 GMC Sierra 2500 HD AT4 All Engines
  • 2021 GMC Sierra 2500 HD SLT All Engines
  • 2021 GMC Sierra 2500 HD SLE All Engines
Product Details
Location : RearQuantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Type : Leaf springLoad Capacity : 1650 lbs.
Rear Helper Spring, Set of 2
Part Number: S99SSR20747
Guaranteed to Fit
$252.99
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD All Submodels All Engines
Product Details
Location : RearNotes : 10.75 × 7.25 × 4.5 in. Dimensions; -47 DensityQuantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : SumoSprings SeriesLoad Capacity : 1500 lbs.Color Finish : Black
Front Helper Spring, Set of 2
Part Number: S99SSF-202-47
Guaranteed to Fit
$252.99
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD All Submodels All Engines
Product Details
Location : FrontQuantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : SumoSprings SeriesType : Leaf springLoad Capacity : 1500 lbs.
Front Helper Spring, Set of 2
Part Number: S99SSF-202-54
Guaranteed to Fit
$253.99
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD All Submodels All Engines
Product Details
Location : FrontQuantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : SumoSprings SeriesType : Leaf springLoad Capacity : 2500 lbs.
Rear Helper Spring, Set of 2
Part Number: S99SSR-203-40-2
Guaranteed to Fit
$631.99
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD All Submodels All Engines
Product Details
Location : RearQuantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : SumoSprings SeriesType : Leaf springLoad Capacity : 2600 lbs.
Rear Helper Spring, Set of 2
Part Number: S99SSR-203-47-2
Guaranteed to Fit
$641.99
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD All Submodels All Engines
Product Details
Location : RearQuantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : SumoSprings SeriesType : Leaf springLoad Capacity : 4600 lbs.
Helper Spring, Set of 2
Part Number: H632551
Guaranteed to Fit
$331.69
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD All Submodels All Engines
Product Details
Notes : Requires Hellwig mounting kit #25250 for vehicles equipped with 2.5 in. wide leaf springs or #25300 for vehicles with 3 in. wide springs.Quantity Sold : Set of 2Warranty : Lifetime Hellwig limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : LP-25 SeriesType : Leaf springLoad Capacity : 2500 lbs.
Helper Spring, Set of 2
Part Number: S99SSA13
Guaranteed to Fit
$674.99
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD Denali All Engines
  • 2021 GMC Sierra 2500 HD Base All Engines RWD
  • 2021 GMC Sierra 2500 HD AT4 All Engines
  • 2021 GMC Sierra 2500 HD SLT All Engines RWD
  • 2021 GMC Sierra 2500 HD SLE All Engines RWD
Product Details
Location : RearQuantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Type : Leaf springLoad Capacity : 3000 lbs.
Rear Helper Spring, Sold individually
Part Number: S99SSA13.5
Guaranteed to Fit
$337.99
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD Denali All Engines
  • 2021 GMC Sierra 2500 HD Base All Engines
  • 2021 GMC Sierra 2500 HD AT4 All Engines
  • 2021 GMC Sierra 2500 HD SLT All Engines
  • 2021 GMC Sierra 2500 HD SLE All Engines
Product Details
Location : RearQuantity Sold : Sold individuallyWarranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Type : Leaf springLoad Capacity : 1500 lbs.
Helper Spring, Kit
Part Number: H6361915
Guaranteed to Fit
$476.65
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD All Submodels All Engines
Product Details
Notes : TunableQuantity Sold : KitWarranty : Lifetime Hellwig limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : Pro SeriesLoad Capacity : Up to 2500 lbs. Level Load Capacity
Trailer SumoSprings, Set of 2
Part Number: S99TSS10747
Universal Fit
$294.99
Product Details
Notes : 5000-8500 GAWR; 1800 lb. at 50% Compression Capacity; Patented Micro-Cellular Urethane MaterialQuantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : SumoSprings SeriesLoad Capacity : 1800 lbs.Color Finish : Black
Helper Spring, Set of 2
Part Number: S99TSS-107-40
Universal Fit
$267.99
Product Details
Notes : 3000-5000 GAWR; Spring Over Axle Configuration; Includes line relocation bracketQuantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : SumoSprings SeriesType : Leaf springLoad Capacity : 500 lbs.
Helper Spring, Set of 2
Part Number: S99SFR-100-47
Universal Fit
$218.99
Product Details
Quantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : SumoSprings SeriesType : Leaf springLoad Capacity : 1500 lbs.
Trailer SumoSprings, Set of 2
Part Number: S99TSS10647
Universal Fit
$320.99
Product Details
Notes : 5000-8500 GAWR; 1800 lb. at 50% Compression Capacity; Patented Micro-Cellular Urethane Material; Line Relocation Bracket IncludedQuantity Sold : Set of 2Warranty : Lifetime SuperSprings limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Series : SumoSprings SeriesLoad Capacity : 1800 lbs.Color Finish : Black
Page 1 of 1 | Showing 1 - 14 of 14 results

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Product Questions & Answers

Q:Do these lift the ventricle any or just assist with squatting when towing a load? Show Less
Neil D.
A:BEST ANSWERHi Neil, I am pleased to assist you. These SumoSprings are primarily designed to assist with squatting when towing a load rather than significantly lifting the trailer's ventricle. While they can provide some lift—typically around 1/4" to 1/2" when installed with the proper preload—their main function is to support the trailer and prevent excessive squatting when carrying heavy loads. If you're interested, you can use the link below to order while the part is in stock. Your order will come with a 30-day post-purchase price match guarantee. I hope this helps, and enjoy shopping! https://www.carparts.com/helper-spring/supersprings/s99tss10647?can=CPGG4850_CSQA_20241203 Show less
Grace G.
 
5 Questions, 1 AnswerView all Q&As >
Q:will I need any other parts for this to work on my 2017 promaster city?  thanks ! Show Less
CHALMER T.
A:BEST ANSWERHi Chalmer, You need to provide your own brackets and hardware when installing this part. Please check the link below for more information: https://www.supersprings.com/instructions/SFR-100-47.pdf Show less
Aldrin P.
 
5 Questions, 1 AnswerView all Q&As >
Q:lift kit for 2003 Toyota RAV4 4x4 ?
woodz07
A:BEST ANSWERHi Joseph, thank you for reaching out. This set of helper springs is incompatible with the 2003 Toyota RAV4. This item is designed for trailer frames. Per checking, we don't have a suspension lift kit for your vehicle. Thank you for inquiring. Have a nice day. Show less
Aldrin P.
 
5 Questions, 1 AnswerView all Q&As >