Built for heavy hauling and hard work, these Heavy Duty Springs help stiffen suspension and reduce vehicle sag when your shocks are under serious demand. Ideal for loaded rides, plowing, or snow clearing, they help maintain ride height and support when the job gets tough. Sold as a pair. This set of heavy-duty springs will stiffen your suspension. Perfect for reducing vehicle overall sag when shocks are under heavy demand: heavy loading and hauling or for snow clearing. Kit of 2 springs.