StopTech Sport Slotted Brake Rotors are premium one-piece replacement brake discs for factory brake systems and stock calipers. The 126.47020SR (Right Rear) features a unique vacancy-based slotting design that significantly improves braking performance by wiping away debris and preventing glazing. Key features include: high-quality G3000 metallurgy for increased durability, a specialized E-Coat finish on the hubs and vanes for superior corrosion protection, and improved cooling through directional vane architecture. This is a single high-performance brake rotor. For a complete rear axle upgrade, it is recommended to pair this with part number 126.47020SL (Left Rear). Compatible with vehicle models equipped with Brembo rear calipers and 5x114.3 or 5x100 bolt patterns (specific to 2004-2007 WRX STI applications).