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

SKU HW9511-25300

The Hellwig 9511 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 25300 mounting kit.

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Product Specifications

Location: Fits Rear Axle
Capacity:3,500 lbs.
Instructions: Hellwig 9511-25300 Helper Springs Instructions.
Note:Includes Mounting Kit 25300

Typically ships in 6-8 weeks.

The Hellwig 9511 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 25300 mounting kit.

Product Specs for Hellwig 9511-25300

Location: Fits Rear Axle
Capacity:3,500 lbs.
Instructions: Hellwig 9511-25300 Helper Springs Instructions.
Note:Includes Mounting Kit 25300
Manufacturers Part Number:9511-25300
MPN: 9511-25300

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Hellwig 9511-25300 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.

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 9511-25300

The HW9511-25300 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.

Dodge
Ford

Year	Make	Model	Vehicle Option	Installation Notes
1986	Dodge	B350		Fits cutaway chassis models.
1987	Dodge	B350		Fits cutaway chassis models.
1988	Dodge	B350		Fits cutaway chassis models.
1989	Dodge	B350		Fits cutaway chassis models.
1990	Dodge	B350		Fits cutaway chassis models.
1991	Dodge	B350		Fits cutaway chassis models.
1992	Dodge	B350		Fits cutaway chassis models.
1993	Dodge	B350		Fits cutaway chassis models.
1994	Dodge	B350		Fits cutaway chassis models.
1995	Dodge	B3500		Fits cutaway chassis models.
1996	Dodge	B3500		Fits cutaway chassis models.
1997	Dodge	B3500		Fits cutaway chassis models.
1998	Dodge	B3500		Fits cutaway chassis models.
1975	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1976	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1977	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1978	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1979	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1980	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1981	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1982	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1984	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1985	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1986	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1992	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1993	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1994	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1995	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1996	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1997	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1998	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1999	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2000	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1983	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1987	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1988	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1989	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1990	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1991	Ford	E-350 Econoline	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2003	Ford	E-350 Club Wagon	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1999	Ford	E-350 Econoline Club Wagon	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2000	Ford	E-350 Econoline Club Wagon	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2001	Ford	E-350 Econoline Club Wagon	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2002	Ford	E-350 Econoline Club Wagon	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1997	Ford	E-350 Econoline Club Wagon	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1998	Ford	E-350 Econoline Club Wagon	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2004	Ford	E-350 Club Wagon	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2004	Ford	E-350 Super Duty	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2005	Ford	E-350 Club Wagon	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2005	Ford	E-350 Super Duty	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2006	Ford	E-350 Super Duty	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
2007	Ford	E-350 Super Duty	Fits 2 Wheel Drive	Fits van and cab & chassis models with 3 inch springs.
1971	Dodge	M375
1972	Dodge	M375
1973	Dodge	M375
1970	Dodge	M375
1973	Dodge	M300
1974	Dodge	M300
1975	Dodge	M300
1976	Dodge	M300
1977	Dodge	M300
1978	Dodge	M300
1979	Dodge	M300
1980	Dodge	M300
1981	Dodge	M300
1973	Dodge	M400
1974	Dodge	M400
1975	Dodge	M400
1976	Dodge	M400
1977	Dodge	M400
1978	Dodge	M400
1979	Dodge	M400
1980	Dodge	M400
1981	Dodge	M400
1974	Dodge	M500
1975	Dodge	M500
1976	Dodge	M500
1977	Dodge	M500
1978	Dodge	M500
1979	Dodge	M500
1980	Dodge	M500
1981	Dodge	M500

Customer Q&A - Hellwig 9511-25300

Ask A Question

I have a class c 1990 Ford E350 motor home 30 foot has sagging leaf spring not broke 30 years off use will the pro helper bring it back to factory hidth it's saggy about 4 inches guessing pro 35 helper

Asked January 27, 2019

Joe

This Load Pro 35 helper spring set may help bring some ride height back to your motor home but it is best to address the health of the base suspension system before adding in extras. Using helper springs as a bandaid for ride height problems is not recommended and may lead to more problems down the road. It would be best to take your motorhome to a spring shop and have them inspect the springs and possibly re-arch, add leaves, or replace the worn out spring packs after their condition is assessed.

Does this kit contain parts for right and left sides of the vehicle?

Asked February 9, 2013

Lester

Yes, Hellwig helpers spring kits include everything you need for both the left and right side of your vehicle. They include 2 helper springs, one for each side of the rear.

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.