StopTech Sport Rotors are 1-piece direct replacement brake discs for factory brake systems and stock calipers. This is the front left (Driver Side) drilled and slotted rotor designed to improve cooling and braking performance. Features a durable black e-coating for corrosion resistance. Note: For a complete front set, use with part number 127.33099R. Related components (Order separately for full replacement): - Front Right Rotor: 127.33099R - Recommended Brake Pads: 309.13240 (StopTech Sport Pads)