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. Mercedes-Benz GL320 2007-2009, Mercedes-Benz GL350 2010-2012, Mercedes-Benz GL450 2007-2012, Mercedes-Benz GL550 2008-2013, Mercedes-Benz ML320 2008-2009, Mercedes-Benz ML350 2008-2011, Mercedes-Benz ML450 2010-2011, Mercedes-Benz ML500 2006-2007, Mercedes-Benz ML550 2008-2011, Mercedes-Benz R320 2007-2009, Mercedes-Benz R350 2006-2012, Mercedes-Benz R500 2006-2007