61912 Silent Support System Helper Spring with up to 2500 lbs Level Load Capacity

This increases 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. 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 using tools you already have. Made in the USA.