StopTech Sport Rotors are 1-piece direct replacement brake discs for factory brake systems and stock calipers. This Drilled Sport Brake Rotor (Left Front) is designed for improved cooling and better performance in wet weather. Features: High performance street use, cross-drilled for cooling, black e-coat finish for corrosion resistance, and superior resistance to thermal cracking. Specially designed for 316mm front disc brake systems. Components: 1 x StopTech 128.47030L (Drilled Brake Rotor, Left).