EBC USR Series Sport Slotted Rotor EBC USR Series Sport Slotted Rotor; Front; 13.7 in. Dia.; Set of Two; BMW X1 XDRIVE35I 2013 2014 2015 3L N55B30A (2979cc) GAS EBC Brakes EBC Brakes EBC USR Series Sport Slotted Rotor - USR1512 USR1512 Disc Brake Rotors