The R1 Concepts drilled-and-slotted black brake rotor for 2007–2013 Mazda 3 front left is a replacement rotor that supplies a drilled-and-slotted braking surface and black finish for that wheel position. Its open surface pattern is intended to assist heat dissipation and channel debris and gases away from pad contact for steadier braking, and it matches the Mazda 3 years and side listed as a direct replacement.
R1 07-13 Mazda 3 Front Left Drilled & Slotted Black Brake Rotor