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1999 GMC Sierra 2500

1999 GMC Sierra 2500 Helper Springs

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Helper Spring, Set of 2
Part Number: S99SSA16
Guaranteed to Fit
$534.99
Vehicle Fitment
  • 1999 GMC Sierra 2500 All Submodels All Engines Medium Duty, Provides 1650 lbs. Of Additional Capacity, 47 in. L X 3 in. W X .499 in., Never Exceed GVWR, With Factory Top Overload Spring
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.

Type : Leaf springLoad Capacity : 1650 lbs.
Helper Spring, Set of 2
Part Number: H6361901
Guaranteed to Fit
$526.45
Vehicle Fitment
  • 1999 GMC Sierra 2500 All Submodels All Engines With 43 in. Or Longer Base Leaf
Product Details
Quantity Sold : Set of 2Warranty : Million-mile 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.

Includes : Leaf helper springs, heavy duty U-bolts and other mounting hardwareType : Leaf springLoad Capacity : 2500 lbs.
Helper Spring, Set of 2
Part Number: H6361902
Guaranteed to Fit
$463.14
Vehicle Fitment
  • 1999 GMC Sierra 2500 All Submodels All Engines
Product Details
Quantity Sold : Set of 2Warranty : Million-mile 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.

Includes : Leaf helper springs, heavy duty U-bolts and other mounting hardwareType : Leaf springLoad Capacity : 2500 lbs.
Rear Helper Spring, Set of 2
Part Number: S97R1115
Guaranteed to Fit
$124.25
Vehicle Fitment
  • 1999 GMC Sierra 2500 SLE 8 Cyl 6.0L 4WD, Lift Height 1.5 in.; w/Tie Bolts
  • 1999 GMC Sierra 2500 SLE 8 Cyl 5.3L 4WD, Lift Height 1.5 in.; w/Tie Bolts
  • 1999 GMC Sierra 2500 SL 8 Cyl 6.0L 4WD, Lift Height 1.5 in.; w/Tie Bolts
  • 1999 GMC Sierra 2500 SLT 8 Cyl 6.0L 4WD, Lift Height 1.5 in.; w/Tie Bolts
  • 1999 GMC Sierra 2500 SLT 8 Cyl 5.3L 4WD, Lift Height 1.5 in.; w/Tie Bolts
  • 1999 GMC Sierra 2500 SL 8 Cyl 5.3L 4WD, Lift Height 1.5 in.; w/Tie Bolts
Product Details
Location : RearNotes : With tie boltsQuantity Sold : Set of 2Warranty : Lifetime Skyjacker 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.

Helper Spring, Set of 2
Part Number: S99SSA10
Guaranteed to Fit
$537.99
Vehicle Fitment
  • 1999 GMC Sierra 2500 All Submodels All Engines Requires PN[MTKT]
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.

Type : Leaf springLoad Capacity : 1650 lbs.
Helper Spring, Set of 2
Part Number: S99SSA15
Guaranteed to Fit
$674.99
Vehicle Fitment
  • 1999 GMC Sierra 2500 All Submodels All Engines Requires PN[MTKT]~ For Heavy Loading Use
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.

Type : Leaf springLoad Capacity : 2600 lbs.
Helper Spring, Set of 2
Part Number: H6361912
Guaranteed to Fit
$463.14
Vehicle Fitment
  • 1999 GMC Sierra 2500 All Submodels All Engines
Product Details
Series : Pro SeriesQuantity Sold : Set of 2Warranty : Million-mile 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.

Includes : Mounting HardwareType : Leaf springLoad Capacity : 2500 lbs.
Helper Spring, Set of 2
Part Number: S99SSA13
Guaranteed to Fit
$674.99
Vehicle Fitment
  • 1999 GMC Sierra 2500 All Submodels All Engines Heavy Duty, Provides 3000 lbs. Of Additional Capacity, 49 in. L X 3 in. W X .946 in., Never Exceed GVWR, With Factory Top Overload Spring, Requires PN[MTKT], Requires PN[MXKT]
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.

Type : Leaf springLoad Capacity : 3000 lbs.
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 MaterialSeries : SumoSprings SeriesQuantity 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.

Load 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 bracketSeries : SumoSprings SeriesQuantity 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 : 500 lbs.
Helper Spring, Set of 2
Part Number: S99TSS-106-40
Universal Fit
$299.99
Product Details
Notes : 3000-5000 GAWR; Spring Under Axle Configuration; Includes line relocation bracketSeries : SumoSprings SeriesQuantity 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 : 1500 lbs.
Helper Spring, Set of 2
Part Number: S99SFR-100-47
Universal Fit
$218.99
Product Details
Series : SumoSprings SeriesQuantity 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 : 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 IncludedSeries : SumoSprings SeriesQuantity 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.

Load Capacity : 1800 lbs.Color Finish : Black
Page 1 of 1 | Showing 1 - 13 of 13 results

Top Rated Products

Order came in 2 days early, came in perfectly packaged, and was a perfect fit.
Eric R.
VERIFIED PURCHASER
Fit as promised. Received quickly. Great price. I've ordered other things from <a See More
Nl D.
VERIFIED PURCHASER

Popular Products

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:How do they work and how to install ?
David G.
A:BEST ANSWERHi David, I'm glad to help you out. Air-helper springs are overall the best option for those who want to have total control over the truck's ride, handling, and the amount of rear suspension lift. Let me provide you the manufacturer's installation instructions. You can find more information here: https://www.superspringsinternational.com/instructions/TSS-106-40.pdf I hope this helps. To order the part, click on the link below and take advantage of our post-price-match and limited stocks. Happy shopping. https://www.carparts.com/helper-spring/supersprings/s99tss-106-40?can=CPGG4850 Show less
Grace G.
 
5 Questions, 1 AnswerView all Q&As >