- 2500 lbs. Level Load Capacity
- Progressive rate leaves do not effect ride
- Never needs adjusting
- Simple bolt on installation
- Load & Sway Control in one spring
- Heavy duty plated hardware
- Million mile warranty
It’s patented bolt on design, “Silent Ride” polyurethane stability blocks, plated and powder coated components and easy to follow installation instructions make this the helper spring of choice for do-it-yourself and professionals alike. Manufactured with heat treated ASTM 5150 alloy spring steel in our California based facility, these units increase your vehicles level load carrying capacity up to the manufacturer’s Gross Vehicle Weight Rating. With its progressive rate design this helper spring system enables trucks and vans to carry loads with more control and stability. As your load increases this spring automatically increases its rate to resist sagging and tail dragging.
Easy to Use
Pro Series is packaged in one box which includes all the heavy duty hardware and installation instructions, this unit can be installed in a professional shop or in your own drive way. Simple installation using common hand tools make the Pro Series helper spring a popular and easy to use accessory to assist in all your Tow and Haul needs. Fine tune your vehicles leaf spring suspension to suit your particular needs by adjusting the heavy duty u-bolts provided.
If your tow and haul needs change,
Simply adjust the heavy duty u-bolts to suit the new requirement. Once installed and adjusted you are free to haul and or tow a multitude of equipment and commodities with greater control and stability. Manufactured with heat treated ASTM 5150 alloy spring steel in our California based facility, these units can increase your vehicles level load carrying capacity up to the manufacturer’s Gross Vehicle Weight Rating.
*Progressive Rate Listed – Call for Constant Rate Applications
- Must Remove Factory Overload Contact Springs
- Can also use 6400 if not equipped with fifth wheel hitch
- Installs in place of factory contact overload spring
- Requires drilling
- Step Bracket Style Leaf
- Can also use 1801 for step bracket style leaf
- Leaf & Mounting Kit Packaged Together