Power Stop drilled and slotted rotors provide a bolt-on upgrade for improved brake cooling and performance. Precision cross-drilled for maximum cooling and maximum performance during extreme conditions; rounded slots sweep away gasses, dust, and moisture to keep a clean friction contact patch on the rotor surface. Silver zinc dichromate plating resists rust and corrosion. With a direct OE fit, there are no special modifications needed. BMW 228i 2014-2016, BMW 228i xDrive 2015-2016, BMW 230i 2017-2020, BMW 230i xDrive 2017-2020, BMW 320i 2013-2018, BMW 320i xDrive 2013-2018, BMW 328d 2014-2018, BMW 328d xDrive 2014-2018, BMW 328i 2008-2016, BMW 328i GT xDrive 2014-2016, BMW 328i xDrive 2009-2016, BMW 328xi 2008, BMW 330i 2017-2018, BMW 330i GT xDrive 2017-2019, BMW 330i xDrive 2017-2019, BMW 340i GT xDrive 2017-2019, BMW 428i 2014-2016, BMW 428i Gran Coupe 2015-2016, BMW 428i xDrive 2014-2016, BMW 428i xDrive Gran Coupe 2015-2016, BMW 430i 2017-2020, BMW 430i Gran Coupe 2017-2020, BMW 430i xDrive 2017-2020, BMW 430i xDrive Gran Coupe 2017-2020, BMW X1 2013-2015