StopTech 126.61044SL Sport Front Left Slotted Disc Brake Rotor is a 1-piece direct replacement brake rotor for factory brake systems and stock calipers that looks great behind your wheels and offers significantly improved braking performance. The unique slotting aids with heat and brake dust dispersal, prevents glazing of the pads, adds bite and improves wet and dry braking performance. Built to last, the black e-coating provides protection from corrosion and the high carbon metallurgy (in most applications) offers quieter operation, better crack resistance and increased performance.