StopTech Sport Drilled Rotor; Front Left Side. This premium replacement brake rotor features a cross-drilled surface that improves initial bite and helps evacuate gases and heat for superior braking performance in all conditions. The rotor is finished with a black e-coating for high corrosion resistance. It is a direct bolt-on upgrade for factory systems. Note: This is an individual left-front rotor. For a complete front set, it must be paired with right-front rotor part number 128.42080R. Specifications: Diameter: 320mm, Height: 49.2mm, Nominal Thickness: 28mm, Hub Reg: 68mm, Bolt Pattern: 5x114.3. Includes: 1 x StopTech 128.42080L Front Left Drilled Brake Rotor.