StopTech Sport Rotors are 1-piece direct replacement brake discs for factory brake systems and stock calipers. This is a Right Rear Slotted & Drilled rotor designed to improve cooling and braking performance. The drilled holes allow for better heat dissipation and the slots help sweep away debris and gases that can form between the pad and the rotor surface. Features include a black e-coat finish for corrosion resistance and high-carbon metallurgy for increased crack resistance. Compatible with OEM numbers 34216764655 and 34216855004. Note: This SKU (127.34080R) consists of one (1) single right-hand rear rotor. It is highly recommended to replace rotors in pairs. Complementary part for the left side: 127.34080L.