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3,500-lb Capacity. Custom helper springs install above your vehicle's rear factory leaf springs to prevent sagging when towing or hauling heavy loads. These heavy-duty springs are engineered for constant use. Includes bolt-on installation kit.
Features:
Specs:
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Hellwig Leaf Spring Comparison
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at the Hellwig Load Pro 35 heavy duty helper springs with the custom mounting kit. Now, this is a custom fit part. This is designed to fit the 2020 and newer Chevrolet Silverado and GMC Sierra 2500 two-wheel drive and four-wheel drive trucks. And because it's a custom fit part, I do like to recommend for you to go to our website, use the fit guide, put in your year and model vehicle, and it'll show if this will work for your application. Now, this Load Pro 35 spring set features a full-time spring rate design, which is ideal for vehicles or fleet applications that consistently carry a heavy load day in and day out, gives you a full-time spring rate to adjust to the load on your vehicle for an improved ride and it won't affect your ride while it's unloaded.
One note I do wanna mention, if your vehicle is equipped with a brake fluid proportioning valve, this constant rate spring is not recommended. Only progressive rate helper springs should be used. Now, these custom helper springs will upgrade your factory leaf springs to reduce sway and body roll. They do prevent sagging when you're towing or hauling heavy loads, and they'll extend the life of your factory suspension, tires and brakes. This kit here uses four helper leaf springs that'll flex with the factory leaf springs to limit any bouncing while providing optimal stability.
It is a very easy install. They'll bolt above your factory leaf springs. The driver and the passenger sides can be adjusted independently for uneven loads. The custom installation kit that comes with it includes all the zinc-plated hardware. And for this video, you can see I've attached all the installation hardware to it to show you what it looks like when it's installed.
One note to mention, if your vehicle's equipped with a factory contact overload, it may need to be removed before installing these new helper springs. What I would recommend is just to consult the installation guide. These are a durable steel construction. They ensure long lasting performance. And one thing I do wanna mention is the finish on these, they use a silver vein hammer tone powder coat finish to resist corrosion.
I want to zoom in real close to show you. There's your springs. You can see the finish on them. It gives them a nice finish. Besides looking good, like I said, it helps resist corrosion. Now, these parts are made in the USA. A few specs on this. The weight capacity is 3,500 pounds and these Hellwig helper springs will not increase your vehicle's weight carrying capacity. But that should do it for the review on the Hellwig Load Pro 35 heavy duty helper springs with the custom mounting kit.
Great Product
GREAT CUSTOMER SERVICE
Customer service person Jill is a diamond in the rough, a consummate professional diservant of a pay raise. The Pro 35 helper springs exceeds my expectations.
RV was soft in the rear. These where not so bad to install. And make a big differance in stance abd ride. I think they are a must have.
Hard to review a product the day after it arrives sometimes. I did however mock the overloads up on the truck to make sure everything was going to fit. I need these to help with tongue weight on a bigger fifth wheel rv I tow. I like the fact that I can adjust preload tension. I also have timbrens under the truck but need to correct some sway under windy conditions. Time will tell.
Great service,people are great to work with, they back every they sell.
I've used E-Trailer for years
etrailer customer support was great! Shipment to AK got damaged first time and they responded very quickly and sent me all the replacement parts I needed. The product is great and would definitely buy again if I swap out to a new truck!
The motorhome we own is famous for a droopy rear end, scraped bottom on any slope. We spent 2 months in Alaska including a trip to the Arctic Circle. The The Hellwig helper springs made a world of difference,no bottoming of the rear end.I have purchased a lot of products from etrailer and always found the to be; price competitive, good quality, fit accurate, in stock, fast shipping and provide before & after sales suppore.
I was very disappointed. etrailer only sent 1 of the two packages that was part of the complete item, shipped in two separate packages. I contacted them and they side it would be 45 days before they would receive the complete item.
I decided to return the first package and will try to find this item where I can get it sooner.
I have ordered other things from etrailer and have not had any problems.
The product is great and installed fairly easy. The only issue I had was the box was not secure upon arrival and we had to make two plates that were missing. The box needs to be heavier.
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Brooke M.
4/8/2025
Hey Charles! Glad you able to improvise but I really feel bad it arrived missing pieces. Let me look into this more closely for you.