Powerstop Z36 brake upgrade kit, part number K5561-36. New in the boxes. Fits 2011 Chevy/GMC 2500HD/3500HD. Includes new carbon-fiber ceramic brake pads, stainless steel shims, drilled, slotted, and zinc plated rotors for front and rear wheels. This kit sells new for around $800. Sold pickup so no longer need this kit and too late to return it. My loss is your gain.