2016 GMC Sierra eLINE Series Drilled and Slotted Rear Brake Kit with Performance Off-Road/Tow Brake Pads by R1 Concepts High Performance Brake Rotors: Made of G3000 grade cast iron with rust protection for ultimate rust protection., Built with O., E. Rear Brake Kit R1 Concepts Rear Brakes And Rotors Kit |Rear Brake Pads| Brake Rotors And Pads| Optimum OEp Brake Pads And Rotors | WHUN1-31073 Rear Brake Pads And Rotors M specifications in mind, no modification required. Low Dust & Noise: Brake pads come with shims to eliminate noise. All-in-One Complete Brake Kit Replacement: R1 Concepts Brake Kit Series comes with (2) high performance brake rotors and (4) performance brake pads and hardware kit Designed for smoother and quieter stopping, built for longer lasting, consistent braking performance. Ultimate Stopping Power: Precision-drilled holes and countersunk design prevents cracking and build up, enhances ventilation and dissipates heat.