StopTech Slotted Sport Brake Rotors are premium one-piece direct replacement brake discs for your factory braking system. The directional slotting aids in the dispersal of heat, brake dust, and gases, providing consistent braking performance and improved pedal feel. These rotors feature a special E-coat finish on the hubs and vanes for high-level corrosion resistance. This part (126.42120SL) is a single Front Left side rotor. For a complete front axle setup, it is highly recommended to pair this with the Front Right rotor (PN: 126.42120SR). Technical specifications: Diameter: 320mm, Height: 44mm, Nominal Thickness: 28mm, Hub Reg: 68mm, Bolt Circle: 5x114.3.