StopTech Sport Drilled Rotor (Right Rear). This is a single high-performance replacement brake rotor featuring a cross-drilled finish for improved heat dissipation and wet weather performance. Part Number: 128.42088R. The package contains: 1x Right Rear Drilled Brake Rotor (128.42088R). Features a black e-coating for corrosion protection and high-carbon metallurgy for reduced noise and increased durability.