Air Spring Helper Suspension Kit for 2001-2006 Chevrolet Chevy Silverado 1500 HD 2500 and GMC Sierra 1500 HD 2500 (Not Quad-Steer) (2WD & 4WD). The kit also has an installation manual including all the instructions step by step.QUALITY - It is designed to maximize the vehicle's safe load-carrying capacity, stability, ride quality and brake effectiveness.
