Will the SumoSprings Solo Custom Helper Springs Fit a 2021 GMC Sierra 1500 AT4

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Question:

Will this fit 2021 gmc 1500 AT4?

asked by: Chuck

1

Helpful Expert Reply:

The SumoSprings Solo Custom Helper Springs - Rear Axle # SS65FR are confirmed to fit your 2021 GMC Sierra 1500 AT4. However, I would not recommend them. Since the AT4 has a 2" lift, the SumoSprings would likely be ineffective unless you are experiencing a lot of sag under a heavy load. They already require some sag before they engage, so the additional lift will increase the distance they need to move before they start to work.

Instead, I recommend the RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS4611. The RAS system attaches to your factory leaf springs, turning them into a mechanically active suspension system. These will help improve handling and stability, as well as extend the life of your leaf springs and shocks. The spring automatically adjusts to your vehicle's load to support extra weight or disengage when unloaded.

I have attached a review and installation video for your reference.

expert reply by: Robin H

1

Answer 1

The Longview Custom Towing Mirrors, #LO54FR are a confirmed to fit for the 2021 GMC Sierra 1500, all trim level packages. there is no exception listed for the Denali trim package. I understand what your dealership has stated and that is a common…

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Answer 2

Hello John, Looks like you already found the right fit. The SumoSprings Solo Custom Helper Springs - Rear Axle #SS45FR is a great fit for your 2023 Chevrolet Silverado 1500. With having the 2" lift I am going to need a measurement from you to…

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Answer 3

When the SumoSprings Solo Custom Helper Springs item #SS65FR are installed on your 2020 GMC Sierra 1500 you will have a 1/2" - 1" of clearance with no additional cargo weight. This allows for you to have a comfortable ride when you are…

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Answer 4

The most cost-effective option that will give your 2021 GMC Sierra 1500 a more level, stable ride when you are towing your travel trailer is from SumoSprings, and there are two options with different capacities: - 1,000 lb Capacity: SumoSprings Solo…

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Answer 5

It sounds like your system may be overloaded. The first thing I would recommend is finding your actual tongue weight. Your Curt #C79JR (17600) has a tongue weight range of 800-1,000 lbs. If your tongue weight is around 1,000 lbs you're already at…

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Answer 6

I reached out to my contact at SuperSprings to determine the best helper spring for your 2021 Trailboss truck. You were comparing the SuperSprings #SS45FR with the SuperSprings #SS65FR. These helper springs will have about a 1" gap before they…

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Answer 7

There isn't an actual height difference between the SumoSprings Solo part #SS45FR and the #SS65FR that fits your 2021 Chevy Silverado 1500. The difference is related to the capacity. The 45 has the higher 1,500 lb capacity and the 65 has a 1,000…

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Answer 8

For your 2022 Chevy Silverado 1500 LTD Trailboss you can either use the SumoSprings #SS65FR which is rated for 1,000 lbs or the SumoSprings #SS45FR which are rated for 1,500 lbs. I honestly just recommend going with the higher rating. SumoSprings is…

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Answer 9

Hello Steven. You are definitely in the right spot. The SumoSprings Solo Custom Helper Springs - Rear Axle #SS65FR will be an excellent fit for your 2024 Silverado 1500, and I did confirm that they fit the Trail Boss model. These can handle a weight…

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Answer 10

I checked with Sumosprings and the #SS65FR and the dimensions are 5 inches tall by 4 inches in diameter without the spacer.

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Answer 11

The SumoSprings Solo Custom Helper Springs #SS45FR and SumoSprings Solo Custom Helper Springs #SS65FR both have the same fitment but have different weight capacities. The #SS45FR is rated for 1,500lbs while the #SS65FR is only rated for 1,000lbs.

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Answer 12

With the SumoSprings Solo Custom Helper Springs #SS45FR or #SS65FR installed on your 2021 Chevrolet Silverado 1500 with no additional cargo weight you will see 1/2" of clearance between the spring and your axle pad. This allows for you to have a…

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Will the SumoSprings Solo Custom Helper Springs Fit a 2021 GMC Sierra 1500 AT4

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