StopTech Sport Slotted & Drilled Brake Rotors (Left Front) are 1-piece direct replacement brake discs for your factory brake system and stock calipers. They offer improved cooling and shorter stopping distances. The cross-drilling and slotting aid in heat and brake dust dispersal, prevent pad glazing, and provide better bite even in wet weather. Finished with a durable black e-coat for superior corrosion resistance. This is a single front left rotor (127.39036L). Part of the StopTech Sport Rotor series.