Hellwig Load Pro 35 Helper Spring | Rear Axle | 3500 lbs. Capacity

SKU HW3512-25312

$507.12 Free Ship!
 
2 In Stock as of 9/22/2020 11:05:48 PM EST.

The Hellwig 3512 Load Pro 35 kit is designed to give your truck up to 3500 pounds of load levleing capacity. Includes 2 steel leaf helper springs and 25312 mounting kit.

Product Specs for Hellwig 3512-25312

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Hellwig 3512-25312 Details

Hellwig Load Pro 35 Helper Springs

This Hellwig helper spring set features Progressive Spring Rate and Fulltime Spring Rate design, this spring is the workhorse of the Hellwig Spring line. With the Progressive design the vehicle must be loaded and its spring compressed to activate the Hellwig Spring, therefore as the vehicles load increases the Hellwig Helper Spring progressively increases its resistance to the load. In the Fulltime design the Hellwig Spring reacts immediately to the vehicles load, compressing very little as a load is applied to the vehicle.

Manufactured with heat treated ASTM 5160 alloy spring steel these units increase your vehicles level load carrying capacity up to the manufacturer’s Gross Vehicle Weight Rating. Designed to install on full size pick-up trucks and vans, this unit requires mounting hardware to accommodate 2 1/2" or 3" wide leaf springs. Ideal for helping manage your load more efficiently, these kits are easy to install and require little or no maintenance. Just “Set it and forget it”. The LP 35 is rated at 3500lbs level load carrying capacity, do not exceed the Gross Vehicle Weight Rating.

The Hellwig Load Pro 35 Series helper spring is designed for full sized pickup trucks, vans, RVs, and sport utility vehicles. The kit contains 2 heavy duty leaf assemblies that run over both sides of the axle. A mounting hardware kit is included with these heavy duty helper springs.

Hellwig Load Pro 25 Helper Springs
Features & Benefits
  • Made with high-quality alloy spring steel.
  • Engineered for the heaviest loads.
  • Up to 3500 lb. level load capacity.
  • Heat-treated for strength and durability.
  • Recommended for 3/4 Ton and 1 Ton Applications.
  • 4-Leaf Stack.
  • Progressive Rate Design is Fully Adjustable.
  • Factory ride is unaffected when vehicle is unloaded.
  • Includes mounting kit.

Vehicle Application Guide for Hellwig 3512-25312

The HW3512-25312 Hellwig Load Pro 35 Helper Spring | Rear Axle | 3500 lbs. Capacity is engineered to work with specific vehicles displayed below. Can't find your vehicle, or need assistance, please give us a call at 1-800-358-4751 or 1-989-755-0561. Browse the category Hellwig Helper Springs to view all vehicle makes and models.

  • Chevrolet
  • GMC
YearMakeModelVehicle OptionInstallation Notes
2011 Chevrolet Silverado 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2012 Chevrolet Silverado 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2013 Chevrolet Silverado 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2014 Chevrolet Silverado 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2015 Chevrolet Silverado 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2016 Chevrolet Silverado 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2017 Chevrolet Silverado 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2018 Chevrolet Silverado 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2018 GMC Sierra 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2017 GMC Sierra 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2016 GMC Sierra 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2015 GMC Sierra 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2014 GMC Sierra 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2013 GMC Sierra 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2012 GMC Sierra 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2011 GMC Sierra 2500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models.
2011 Chevrolet Silverado 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2012 Chevrolet Silverado 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2013 Chevrolet Silverado 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2014 Chevrolet Silverado 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2015 Chevrolet Silverado 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2016 Chevrolet Silverado 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2017 Chevrolet Silverado 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2018 Chevrolet Silverado 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2018 GMC Sierra 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2017 GMC Sierra 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2016 GMC Sierra 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2015 GMC Sierra 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2014 GMC Sierra 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2013 GMC Sierra 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2012 GMC Sierra 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.
2011 GMC Sierra 3500 HDFits 2 Wheel Drive; Fits 4 Wheel DriveFits pickup and Cab & Chassis models. Includes Dually models. Must remove factory overloads.

Customer Q&A - Hellwig 3512-25312


I have 2500hd 2018 gmc . I have a bigfoot camper 3500 pounds without liquids. Now, I have hd Timbren and I don't like that. This helper spring will be good forme? And is it smooth when the thruck is no load?

Asked
Depending on what you don't like about the Timbrens these may or may not be a good match for you. The Timbrens will give you the best unloaded ride as they do not contact when unloaded, where a helper spring like this will have preload where it is acting on your unloaded suspension. The preload on these helper springs is adjustable but there will always be some extra stiffness added to the suspension. Neither option will completely eliminate sag because some sag is required for both products to work. This helper spring kit will have less overall capacity than the Timbrens but the helper spring will start to carry weight earlier than the Timbrens depending on how you adjust them. There are many variables in recommending one over the other and it may be best if you contact us directly so we can discuss different load support options with you further.


How is the ride versus stock with no payload?

Asked
When using an overload spring like the Hellwig Load Pro 35 you are in control of the unloaded ride quality by adjusting the pre-load that the main leaf of the spring pack is placing on your suspension. By adjusting the u-bolts at the ends of the helper assembly you control how much force is being applied to the springs when unloaded and this adjustment will be what affects the unloaded ride quality. Normally on the lightest setting with the overload just applied there is not a noticeable change, the only time they may become noticeable is on large bumps where the leaf spring flexes more than normal and the helper spring assembly will apply additional pressure.


Does this product increase the payload of the vehicle? ie Does it allow for higher pin weight while towing my 5th wheel? My vehicle is a 2011 Chevy Silverado 2500HD crew cab. Duramax Diesel/Allison tranny. It currently handles the weight, though I'm near max payload.

Asked
Hellwig load pro heavy duty helper spring 3512-25312 will not increase the payload in your vehicle. The Hellwig 3512-25312 helper spring is designed to keep the truck level when payload increases. There are many other factors that go into your payload rating, brakes, transmission, etc. The Hellwig helper springs has up to 3500 lbs of load leveling capability. This kit will not allow for a higher pin weight but will keep the truck level when towing. Feel free to call us at 1-800-358-4751 if you have any questions.


Hellwig

TruckSpring is a warehouse distributor for Hellwig products and we have been installing Hellwig air spring kits, Hellwig sway bars and Hellwig steel helper springs kits at our shop for years at our Michigan repair facility. We have a great working relationship with Hellwig and are very familiar with all of their suspension products. Hellwig products are made in the USA and we highly recommend them.

The history of Hellwig Products Co, Inc. began in Kansas City, Kansas in the early forties. With son Donald by his side, Rudolph, " Ruddy" Hellwig, began designing and manufacturing "Helper Springs". The business was moved to Southern California in the mid forties and incorporated in 1946.

By the mid 60's the company's southern California location proved to be to small and Don moved the Manufacturing facility to its current location in Visalia, California. Throughout the years Hellwig products has developed innovative suspension products that help vehicles handle loads and control sway. Products include Anti-Sway bars aftermarket and O.E.M. Also the most popular and imitated load assist products ever introduced to the light truck aftermarket, the "Load Pro 25 Series".

With a third generation of Hellwig, Don's son Mark directing the business a whole new series of innovations is being introduced. Included in these innovations is the "Next Generation" of load assist springs the patented "Pro Series" line of springs. Plus, a unique adjustable feature on new Anti-sway bar designs. Hellwig is proud to introduce the "FastRack" motorcycle racking system for toyhaulers and light trucks. Now beginning its 60th year Hellwig Products continues to introduce new materials, processes and manufacturing techniques into its product lines.

For more information visit www.hellwigproducts.com

Hellwig Warranty

Limited Lifetime Warranty

On steel helper springs and sway bars

2 Year Limited Warranty

On Hellwig Air bag kits

What the Warranty does not cover

Damage from accidents, corrosion, improper installation, incorrect applications, overloading, and custom applications that are not specified under the OEM cross references. This warranty does not cover loss of freight, loss of profit, equipment, or personal downtime. Hellwig’s warranties are non-transferrable.

You can view the full details of Hellwig’s warranty here.

How to get service

Contact Hellwig directly for Warranty claims at 1-800-HELLWIG (435-5944).
Hellwig Products Co., Inc.
16237 Avenue 296
Visalia, CA 93292

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