StopTech Sport Rotors are 1-piece direct replacement brake discs for factory brake systems. These performance rotors feature a unique cross-drilled and slotted pattern that provides improved cooling, better bite, and shorter stopping distances. The Drilled & Slotted finish helps dissipate heat and sweep away water and dust, ensuring consistent braking performance under various conditions. This specific part (127.40017R) is for the Right Rear position. Features a durable black e-coating on the non-friction surfaces to prevent corrosion and enhance appearance behind the wheels. Part Number: 127.40017R. Type: Slotted and Drilled One-Piece Rotor. Position: Rear Right.