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.
- 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