RV Helper Springs

RV Helper Springs

LP-35

  • Heaviest Loads
  • 4-Leaf Stack
  • 3500 lbs. Level Load Capacity
  • Available in Progressive or Constant Rate
  • Offers the Maximum in Carrying Capacity
  • Recommended for 3/4 Ton and 1 Ton Applications
  • Mounting kit sold separately

LP-25

  • Heavy Loads
  • 3-Leaf Stack
  • 2500 lbs. Level Load Capacity
  • Progressive Rate Design is Fully Adjustable
  • Design can handle the load 24/7
  • Mounting kit sold seperately

About The Load Pro Series

This Hellwig Helper Spring set the standard for all other aftermarket helper springs. Featuring 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 immediately reacts to the vehicles load, therefore compressing very little as 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. When ordering be sure to identify the spring kit and the appropriate mounting hardware kit to complete the installation. Simple bolt on design using common hand tools provide the installer ease of installation and the vehicle owner hassle free use. “Set it and forget it”. The LP 25 is rated at 2500lbs level load carrying capacity and the LP 35 is rated at 3500lbs level load carrying capacity, not exceed the vehicles Gross Vehicle Weight Rating.

Motorhome Helpers & Sway Bars Applications

MakeYearApplicationLP-25 *LP-35 *Hellwig AirFront Sway Bar Part #DiameterRear Sway Bar Part #Diameter
GM72-82G20 Van95109511N/AN/AN/A74471-1/8"
GMInstall Kit (Load Pro Only)25250
Do not install helper springs w/ rear A/C		2525025250
GM83-96G20 Van95109511N/A75191-1/8"76151-1/8"
GMInstall Kit (Load Pro Only)25250
Do not install helper springs w/ rear A/C		2525025250
GM97-06G2500,G3500 Single Rear Wheel Van 95109511N/AN/AN/A76351-3/8"
GMInstall Kit (Load Pro Only)25250
Do not install helper springs w/ rear A/C		2525025250
GM07-11G2500,G3500 Single Rear Wheel Van 61902 Pro-Series Kit
Do not install helper springs w/ rear A/C		N/AN/AN/AN/A76351-3/8"
GM75-99P30 Class A Chas. & Cutaway with 5/8" Axle U-BoltsN/A3501N/A71621-5/8"Front bar includes
rear bushing upgrade
GMInstall Kit (Load Pro Only)35580
GM75-99P30 Class A Chas. & Cutaway with 3/4" Axle U-BoltsN/A3501N/A71621-5/8"Front bar includes
rear bushing upgrade
GMInstall Kit (Load Pro Only)35340
GM00-05P30 Wide Track Motorhome ChassisN/AN/AN/AN/AN/AN/AN/A
GM03-09Kodiak 4500,5500N/A9655N/A72431-5/8"N/AN/A
Ford75-98E250/E350 Van25103510N/A76041-1/8"71831-1/4"
FordInstall Kit (Load Pro Only)2525025250
FordInstall Kit (Load Pro Only)2530025300
Ford99-07E250/E350 Van25103510N/A76041-1/8"71831-1/4"
FordInstall Kit (Load Pro Only)2533525335
Ford08-10E250/E350 Van25103510N/AN/AN/A71831-1/4"
Ford(Load Pro Only)2533525335
Ford75-98E350 Cutaway Chassis95109511N/A70081-3/8"70851-1/2"
FordInstall Kit (Load Pro Only)2530025300
Ford99-10E350 Super Duty Cutaway Chassis w/ Rear Disc Brakes w/o factory RSB95109511610270081-3/8"70851-1/2"
FordInstall Kit (Load Pro Only)2533525335
Ford99-10E350 Super Duty Cutaway Chassis w/ Rear Disc Brakes w/ factory RSB
95109511610270081-3/8"71821-1/2"
FordInstall Kit (Load Pro Only)2533525335
Ford97-10E40/E-450 with 5 Leaf StackN/A
Leaf & Mounting Kit Packaged Together		9640610270081-3/8"71801-1/2"
Ford97-10E40/E-450 with 11 Leaf StackN/A
Leaf & Mounting Kit Packaged Together		9645610270081-3/8"71801-1/2"
Ford99-10F53 Motorhome w/ V10 Engine with Small Axle
Small axle has bolt-on differential cover		N/AN/AN/A72171-5/8"72151-5/8"
Ford99-10F53 Motorhome w/ V10 Engine with Large Axle
Large axle has drop out 3rd member and welded differential cover		N/AN/AN/A72171-5/8"72161-5/8"
Dodge70-03B200,B300,B40025103510N/AN/AN/A7513
w/o large
fuel tank		1-1/8"
DodgeInstall Kit (Load Pro Only)
2525025250
DodgeInstall Kit (Load Pro Only)2530025300
Dodge70-85B, MB, & F300-40095103510N/AN/AN/A71661-1/4"
DodgeInstall Kit (Load Pro Only)2530025300
Dodge65-73M30095109511N/AN/AN/AN/AN/A
DodgeInstall Kit (Load Pro Only)2530025300
Dodge74-81R, M300-50095109511N/AN/AN/AN/AN/A
DodgeInstall Kit (Load Pro Only)2530025300
Dodge70-73M375,M400 Motorhome Chasis95109511N/AN/AN/AN/AN/A
DodgeInstall Kit (Load Pro Only)2530025300
Dodge86-98B350 Cutaway Chassis95109511N/AN/AN/A71661-1/4"
DodgeInstall Kit (Load Pro Only)2530025300
Dodge04-06Sprinter 2500 multi leaf application only
**Do not install helper leaves on monoleaf spring**		25513551N/AN/AN/A72391-1/8"
DodgeInstall Kit (Load Pro Only)2535125351
Dodge07-10Sprinter 2500 multi leaf application only25513551N/AN/AN/A72531-1/8"
DodgeSprinter 2500 multi leaf application only
**Do not install helper leaves on monoleaf spring**
DodgeInstall Kit (Load Pro Only)2535125351
Dodge04-07Sprinter 3500 multi leaf application only25513551N/AN/AN/A72511-7/16"
DodgeInstall Kit (Load Pro Only) 2535125351
Dodge2006 & 2007 applications - before ordering sway bar verify distance between end link centers at 29.5" If 27.5" use 7254
Dodge08-10Sprinter 3500 multi leaf application only25513551N/AN/AN/A72541-1/2"
DodgeInstall Kit (Load Pro Only)2535125351
Dodge2008 applications- Before ordering sway bar verify distance between end link centers at 27.5"
Monaco99-05RR8R ChassisN/AN/AN/A72321-5/8"72331-5/8"
Workhorse00-10W20-22 Workhorse Motorhome Chassis
rear axle shock casting separate from lower ubolt clamp		N/AN/AN/A72181-5/8"72191-3/4"
Workhorse04-10W20-22 Workhorse Motorhome Chassis
integral rear axle shock bracket and lower u-bolt clamp		N/AN/AN/A72181-5/8"72371-3/4"

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