StopTech Sport Drilled Brake Rotors are 1-piece direct replacement brake discs for your factory brake system and stock calipers. These rotors provide improved cooling and improved wet and dry braking performance. The cross-drilled holes allow for better heat dissipation and help sweep away gas and dust during high-performance driving. This part number (128.34126L) includes: 1x Left Front Drilled Brake Rotor (312x25mm). For a complete axle set, it is recommended to pair with the right-side rotor 128.34126R.