Centric Parts brake caliper rebuild kits help restore your disc brake calipers to like new condition. These high quality caliper kits include major replacement parts such as O-rings and seals. Designed to meet OE quality, configuration, and fitment; Includes spring, cup seals and dust boots; Made of high-quality materials for long lasting performance; Sold as an axle set for two wheels 2003 - 2005 Audi RS6, 2003 - 2006 Mercedes-Benz CL55 AMG, 2003 - 2006 Mercedes-Benz E55 AMG, 2003 - 2006 Mercedes-Benz S55 AMG, 2003 - 2008 Mercedes-Benz SL55 AMG, 2004 - 2007 Mercedes-Benz SL600, 2005 - 2006 Mercedes-Benz CL65 AMG, 2005 - 2006 Mercedes-Benz SL65 AMG, 2006 - 2006 Mercedes-Benz CLS55 AMG, 2006 - 2006 Mercedes-Benz S65 AMG, 2007 - 2008 Audi RS4, 2008 - 2015 Audi R8, 2013 - 2016 Audi RS5, 2017 - 2017 Chrysler 300