Acura ILX Disc Brake Rotor. Bosch QuietCast Disc Brake Rotor. QuietCast Rotor. 2013 Acura ILX Engine: 1.5L L4; Position: Front;. 2014 Acura ILX Engine: 1.5L L4; Position: Front;. Disc Brake Rotor. Thickness (Disc Brake Rotor): 21 mm.