Posi Quiet brake pads are manufactured using the same positive molding process utilized by Original Equipment suppliers. Positive molding uses extreme pressure to compress the friction material and bond it to the backing plate. This process assures consistent friction material density throughout the pad, resulting in even wear and performance characteristics throughout the life of the brake pad. The number one cause for customer returns are noise and vibration. Centric Parts has recognized these issues and is constantly improving its products to eliminate these issues. Posi Quiet brake friction features either precision cut or shaved backing plates and mechanically attached shims; these small details ensure proper fitment in the caliper and virtually eliminate noise associated with pad vibration. In addition to these features Centric Parts has added a scorching process to all of its Posi Quiet brake pads. This additional process forces any impurities out of the friction material and pre-burnishes the pads to greatly accelerate the break-in process. All Posi Quiet brake pad friction formulations are asbestos free and are available in three application specific compounds complete with all necessary hardware for installation where applicable. Outstanding wear characteristics; 100% scorched for easy bed-in; 100% shimmed to eliminate noise and vibration; Stable friction performance across a wide temperature range; Hardware included; Where applicable; 100% Asbestos-free formulas 2015 - 2016 Mercedes-Benz SL400, 2017 - 2017 Mercedes-Benz SL450, 2013 - 2017 Mercedes-Benz SL550 Fitment: 2013 Mercedes-Benz SL550 Base 2014 Mercedes-Benz SL550 Base 2015 Mercedes-Benz SL400 Base 2015 Mercedes-Benz SL550 Base 2016 Mercedes-Benz SL400 Base 2016 Mercedes-Benz SL550 Base 2017 Mercedes-Benz SL450 Base 2017 Mercedes-Benz SL550 Base 2018 Mercedes-Benz SL450 Base 2018 Mercedes-Benz SL550 Base 2019 Mercedes-Benz SL450 Base 2019 Mercedes-Benz SL550 Base 2020 Mercedes-Benz SL450 Base 2020 Mercedes-Benz SL550 Base