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 2011 - 2017 BMW 528i, 2012 - 2016 BMW 528i xDrive, 2014 - 2017 BMW 535d, 2014 - 2017 BMW 535d xDrive, 2011 - 2017 BMW 535i, 2011 - 2016 BMW 535i xDrive, 2011 - 2017 BMW 550i, 2011 - 2017 BMW 550i xDrive, 2012 - 2017 BMW 640i, 2013 - 2017 BMW 640i Gran Coupe, 2014 - 2017 BMW 640i xDrive, 2014 - 2017 BMW 640i xDrive Gran Coupe, 2012 - 2017 BMW 650i, 2013 - 2017 BMW 650i Gran Coupe, 2012 - 2017 BMW 650i xDrive, 2013 - 2017 BMW 650i xDrive Gran Coupe, 2016 - 2017 BMW 750i, 2016 - 2016 BMW 750i xDrive, 2012 - 2016 BMW ActiveHybrid 5, 2015 - 2015 BMW Alpina B6 xDrive Gran Coupe, 2014 - 2017 BMW i8, 2013 - 2016 BMW M5, 2012 - 2017 BMW M6, 2014 - 2017 BMW M6 Gran Coupe