Acura MDX 2017-2020 Raybestos Brakes R-Line Disc Brake Rotor. Acura MDX 2017-2020 R-Line. Raybestos R-Line Brake Rotor. Conventional Or Drum-In-Hat Type Rotor: Conventional. Surface Type: Smooth. Discard Thickness: 9 MM, 0.354 IN.