StopTech Sport Drilled Brake Rotors are 1-piece direct replacement brake discs for your factory brake system and stock calipers. They offer improved stopping performance and high-tech styling. The cross-drilling aids in heat and brake dust dispersal, prevents glazing of the pads, and improves braking performance in wet weather. This part number (128.44105L) refers to the Left Rear single rotor. Key features include: Premium e-coating finish for corrosion resistance, high-carbon metallurgy for reduced noise and increased durability, and directional drill patterns. Kit content: 1 x StopTech 128.44105L Drilled Sport Brake Rotor (Left Rear).