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

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 3

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 4

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 5

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 6

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 7

Since the pin weight of your camper is 2.1k, I recommend going with the LoadLifter 5000 opposed to the 7500. While technically there is not reason you couldn't use the 7500 kit, it really is not necessary for a camper like yours. Generally the…

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Answer 8

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 9

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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Answer 10

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Answer 11

Hi Bruce! The Access Toolbox Edition Soft, Roll-Up Tonneau Cover #A63FR will indeed fit your 2021 GMC Serra 1500 SLT with the short bed and your toolbox. This can be used with toolboxes that measure 19" to 21" long, so you are good to go!…

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Answer 12

Hi Jamie, Easily the best towing mirrors for your 2024 GMC Sierra 1500 Denali with the cameras underneath are the Longview, with the correct part number for your truck being the following: - Longview Custom Towing Mirrors #LO54FR The #LO54FR are easy…

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

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