To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
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Towing or hauling heavy gear can make your rear suspension sag, which throws off handling and braking. The Hellwig Load Pro 35 Heavy Duty Helper Springs add up to 3,500 lbs of support right above your factory leaf springs to keep your ride level and under control. Whether you’re pulling a camper or carrying a bed full of tools, these helper springs keep the truck steady and the suspension working like it should.
Heavy loads can cause body roll and bouncing that make towing stressful. These custom helper springs flex with your factory leafs to limit sway and deliver a more stable, planted feel on the road. The result is smoother handling and less movement through turns or uneven surfaces, even when the weight behind you shifts.
Sometimes one side of the bed or trailer carries more weight than the other. Each Hellwig Load Pro 35 spring can be adjusted separately, giving you control over left-to-right leveling. It’s an easy way to correct uneven loads so your vehicle tracks straight and your tires wear evenly.
These springs are built from heavy-duty steel with a silver vein hammer tone powder coat finish that resists corrosion for long-term use. The custom bolt-on installation kit comes included, so you can mount them securely above your factory leaf springs without extra fabrication. Once installed, they extend the life of your suspension, tires, and brakes by keeping everything working within its limits.
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. If your vehicle is equipped with a factory contact overload it may need to be removed before installing the new helper springs. Please consult the installation guide. Do not install on vehicles with composite (plastic) leaf springs.

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, neighbors, it's Brad here from etrailer, and today we are taking a look at the Hellwig Load Pro 25 and 35 helper springs. That 25 is gonna be rated for a load capacity of 2,500 pounds, and 35 is 3,500 pounds. And really it's gonna be almost identical. That 3,500 just has that extra leaf for extra load capacity. Now, these are gonna be a great option if you're looking to beef up your suspension on your leaf springs by really reducing the amount of sag that you have, as well as a lot of other properties that go with towing and just normal driving. And when looking at suspension enhancements on a lot of vehicles, many times people go straight to airbags, which have their place, jounce bumper replacements, which also have their place, but maybe forget that you can add extra leafs to really work with what you already have.
And a lot of times people want airbags for adjustability, but you have adjustability with this, believe it or not. So let's break it down a little bit as to what it does and what makes it special. Now, I will say, with this series, being that it's pretty high capacities, you're gonna wanna make sure that this isn't something that you're just gonna be, you know, occasionally towing. If that's the case and you just need a little extra every time you tow, you might wanna look at Hellwig's other offerings that are at a lower capacity, because this is going to put a little bit more tension on, you know, leaf packs, especially on a 3/4 ton like we have here, and it could make it a little bit rough without that load on there. Now, it is adjustable, but that does mean that you are gonna have to tighten down nuts each time.
So really this would be set up for something like a fifth wheel, a gooseneck trailer, work trailers, you know, heavy-hauling stuff. But the main thing that this is gonna accomplish is it's gonna reduce bottoming out, it's gonna reduce that sag, it's gonna help with cornering traction. And overall, it's a super easy install as well. And once it's in place, there's no maintenance. So that's also a big plus of this.
As you normally drive, it may be a little bit tight, but I'll tell you this much, it's gonna help with sway control as well. Because it's limiting that flex on the leaf spring, it's gonna wanna keep that truck nice and planted. So even normal driving, it should enhance that handling capabilities and side-to-side body roll. So nice added benefit there. Now, what's really neat with this is, being that it goes onto your factory leaf spring pack, you can still put additional suspension enhancement, whether it be jounce bumpers or airbags.
But more than likely with that capacity, this should really do a good job of preventing you having to get any more. So overall, would I pick this over airbags or jounce bumper replacements Honestly, yeah, I think these are a great option, because it's really putting a lot of that on the leaf springs, whereas your airbags, you're still using that factory suspension. They do have their place if you're towing multiple different loads. But if this is a work truck and you know you're gonna have a heavy load or you know you have a heavy fifth wheel or gooseneck that you tow all the time, you really don't need it. If you're towing a bunch of different trailers, airbags might be the best option for you. Completely up to you. But I think the simplicity of this, the fact that it's a easy installation and other things can be added on really does make a big difference. Now, something that's gonna be important is these are custom fit to specific chassis, so it's really gonna be important to make sure that you use our fit guide to find the right product for you. This one is for a 17 Silverado 2500. So if you have an F-250 or if you have a Ram 2500, they're gonna look a little bit different. It's gonna be a similar spring pack like we have here, but just the way that it's gonna sit on the springs and attach to it might be slightly different. It's gonna be the same physics across the board. At the end of the day, we're trying to really limit how far those factory leaf springs can, you know, bend before these engage. And while we have one installed on the truck, let's take a look at it so you can see what it'll look like. So here installed on our truck, you'll see that it truly does just live on top of our factory leaf springs. It's got U-bolts that go to the center pack to keep that in place. And it does kind of follow almost the same geometry as your factory leaf springs, but seeing that it does taper up at the top, these U-bolts are really where your adjustment comes into play. And that's just gonna be tightening down these nuts. You do have a double nut to keep that in place once you adjust. But when it's at its minimum, as far as getting this tightened down, these can flex, and you're gonna have a little bit of space here to where it shouldn't affect your normal ride quality. Now, if you start cranking 'em down because you're hauling heavy loads and you want these to engage a little bit more, that's when you may start to see the ride quality being affected. But to be completely honest, I installed the basic version on my dad's truck and I started noticing that it helped the handling quite a bit. So comparing these to a sway bar, which Hellwig also makes really nice sway bars, the sway bar just will move up and down, but when you start to lean, that's when it kind of centers out the truck. And that's accomplishing the same thing here, but a sway bar doesn't help at all with sag. And if anyone tells you otherwise, I'm sorry, it doesn't work that way. It is just side to side movement, where this is two birds with one stone. So I really like that. You know, you're knocking out two potential problems on the truck with one product. I think that's a win. And as I mentioned before, depending on how you tighten it, it doesn't have to affect your ride at all. And then when you need that capacity, you can adjust that accordingly and tow with confidence. So if you're looking at suspension enhancement and you come across this page and you're curious about it, I'm here to tell you, these are pretty awesome. I'm really impressed by them. I think they're gonna be a great option for you if you're looking to fix that sag and really just get protection for your truck and get the best towing experience possible. So with that being said, thanks for joining us for a look at the Hellwig Load Pro 25 and 35 helper springs.
Ratings & Reviews

Brooke M.
5/15/2025
Wow, 2 months in Alaska? That must have been beautiful. Would I be correct in assuming you got a front row view of the Northern Lights during your trip?

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.
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Mike L.
7/14/2026
I wish we did too, Otis! The problem is that we have multiple warehouses. We don't stock everything at our Wentzville location where we used to offer will call which caused problems. We decided that although it's a great idea, we shouldn't do it if we can't do it right.