his RAS® Suspension kit for the rear leaf spring is designed for an easy installation. It increases the rear suspension strength up to 50% for improved towing and hauling, reduces excessive bounce, improve stability, and attains the same or better ride quality than stock without needing extra adjustments or maintenance. This 3-in-1 solution works like a helper spring, sway bar and traction bar, at 1/3 the price. Fit-and-forget it install time is approximately one hour. *Not compatible on trucks with factory single leaf spring package OR 2015-2018 w/magnaride