2003-2009 GM Kodiak 4500, 5500 Davis Tru Trac bars, manufactured by Roadmaster Suspension Solutions (RSS), are designed to eliminate wander and reduce rut tracking by controlling excessive axle side play. The result is crisper handling, and more positive control. Like all RSS products, Davis Tru Trac bars are cadmium-plated, and use polyurethane bushings for maximum stability and longevity. Designed to control the excessive axle side play without preventing normal up and down suspension travel or movement. Comes complete with all necessary parts for installation using factory holes. No drilling or welding required. Will not interfere with any factory original equipment or affect any factory warranty.