The R1 Concepts slotted black brake rotor for the front left of 2004 Mitsubishi Lancer is a single-year, front-left replacement rotor specified for that application. Listed as a slotted black rotor, it is intended as the correct front-left unit for the 2004 Lancer when a worn or damaged rotor needs replacement, restoring the slotted braking surface called out in the product description.
R1 04-04 Mitsubishi Lancer Front Left Slotted Black Brake Rotor