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  1. Vehicle Suspension
  2. Hellwig
  3. Leaf Springs and Helper Springs
  4. Towing/Load Leveling
  5. Rear Axle Suspension Enhancement
  6. Heavy Duty
THIS ITEM IS NOT A FIT FOR
2017 Volvo XC60
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Hellwig

Hellwig Load Pro 35 Heavy Duty Helper Springs with Custom Mounting Kit - Above Axle

Part Number: HE63XR
$804.41
Vehicle Suspension
Not Confirmed to Fit

2017 Volvo XC60

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etrailer Installation
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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. Great Prices for the best vehicle suspension from Hellwig. Hellwig Load Pro 35 Heavy Duty Helper Springs with Custom Mounting Kit - Above Axle part number HE63XR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (28)
  • Q & A (0)
  • Videos (1)
  • Photos

Hellwig Vehicle Suspension - HE63XR

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • 3,500-lb Load Support: Keeps your truck level and stable when towing or hauling heavy loads.
  • Reduces Sway and Bounce: Works with your leaf springs to steady steering and control body roll.
  • Protects Suspension and Tires: Prevents sagging to extend the life of your suspension, tires, and brakes.
  • Handles Uneven Loads: Each side adjusts independently to balance weight and keep the ride level.
  • Quick Bolt-On Setup: Mounts above factory leaf springs with included custom installation kit.
Made in USA

Features to know about

Stay Level When the Load Gets Heavy: 3,500-lb Rear Suspension Support

When the trailer’s on the hitch or the bed’s packed full, rear-end sag can throw off your handling and braking. The Hellwig Load Pro 35 helper springs add 3,500 lbs of rear suspension support to keep your truck level under heavy loads. By mounting above your factory leaf springs, they take pressure off your stock suspension so you can tow or haul without squat or sway.

Stable Ride for Every Mile: Heavy-Duty Steel Helper Springs

Rough roads and uneven cargo can make a loaded truck bounce and lean. These heavy-duty helper springs flex with your factory leafs to smooth out the ride and reduce body roll. The added stability keeps steering steady and braking predictable when towing campers, boats, or bed loads that shift on the move.

Fine-Tune Support for Uneven Loads: Independent Side Adjustment

Not every load is perfectly balanced. Each Load Pro 35 spring can be adjusted separately on the driver’s and passenger’s sides, letting you dial in support for uneven cargo or off-center trailers. It’s a simple way to keep your truck sitting even so you stay confident behind the wheel.

Built to Last Through Real Work: Durable Steel with Corrosion Protection

These helper springs are made from strong steel and finished with a silver vein hammer tone powder coat that resists corrosion. The bolt-on installation kit is included, so you can mount them securely above your factory leaf springs without welding or custom fabrication. Once in place, they deliver long-lasting performance that holds up to constant use.

Specs

Weight and Capacity

  • Weight capacity: 3,500 lbs

Warranty

  • Lifetime warranty

Note

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.

Comparison image of Hellwig Load Pro 35 heavy-duty helper springs showing different models and configurations for vehicle rear suspension enhancement.

3512 Hellwig Load Pro 35 Heavy Duty Helper Springs - Above Axle

25302 Hellwig Load Pro Mounting Hardware Kit

Installation Details HE63XR Installation instructions

This Product Fits The Following Vehicles




Video of Hellwig Load Pro 35 Heavy Duty Helper Springs with Custom Mounting Kit - Above Axle
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Hellwig Load Pro Above Axle Heavy Duty Helper Springs Full Review

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

4.8

28 reviews
5 Stars
(25)
4 Stars
(2)
3 Stars
(0)
2 Stars
(1)
1 Star
(0)
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by:
Springs fit well. Seem to help with squat. Wish you did will call instead of shipping.
Mike L. profile picture
Etrailer Expert

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.

by:
Item shipped quickly, when installer open packages all four of the u bolt mounting brackets were missing parts. Contacted Mya at etrailer she assured me a new complete mounting kit would be shipped today.
by:
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.
by:
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.
Brooke M. profile picture
Etrailer Expert

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?

by:
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!
by:
2016 Ford F-250 Super Duty
Easy installation,
by:
1998 Dodge Ram Pickup
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.
by:
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.
by:
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.
Brooke M. profile picture
Etrailer Expert

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.

by:
Great service,people are great to work with, they back every they sell.
I've used E-Trailer for years
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2020 Ford F-250 Super Duty
GREAT CUSTOMER SERVICE
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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.
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1998 Dodge Ram Pickup
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2019 Ford F-350 Super Duty
Great Product
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2017 Chevrolet Silverado 2500
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2023 Chevrolet Silverado 2500
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