StopTech Sport Rotors (formerly PowerSlot) are 1-piece direct replacement brake discs for factory brake systems and stock calipers. This Slotted and Drilled left rear rotor provides improved cooling and shorter stopping distances. Key features include: vacuum cast cooling vanes for superior heat dissipation, a durable black e-coat finish to prevent corrosion on non-friction surfaces, and a high-performance cross-drilled and slotted pattern for enhanced bite and debris removal. This part is a single unit. For a complete rear axle set, please order the matching right side rotor (Part Number: 127.42047R). Items included: 1x StopTech 127.42047L Sport Drilled & Slotted Left Rear Brake Rotor.