Heavy-Duty Front Sway Bar for 2011-2019 Chevrolet and GMC 2500 and 3500 / 3500HD 2WD/4WD trucks. Designed to reduce body roll so you have better vehicle control and greatly improves traction for safer driving. These HD Sway Bars are developed for this specific application. Measuring 1.5″ in diameter and made from heat treated and hot formed 4140 chromoly steel for extra strength and durability. Polyurethane bushings are included. Made in the USA.