StopTech Sport Slotted Brake Rotors are 1-piece direct replacement brake discs for your factory brake system and stock calipers. The 'SR' suffix indicates a Slotted structure for the Rear Right position. These rotors feature a unique vacuum-cast directional vane design and a black e-coat finish on the hubs and vanes to prevent corrosion. Key benefits include improved heat dissipation, reduced brake fade, and better evacuation of gasses and debris. This specific part is a single rotor (1 unit). Part Number: 126.65153SR. Compatible with heavy-duty towing and performance driving applications.