StopTech Sport Rotors are 1-piece direct replacement brake discs for factory brake systems and stock calipers. This part number (127.62124L) refers to the Front Left (Driver Side) Slotted and Drilled rotor. Key features include: vacuum cast high-carbon metallurgy for superior heat dissipation, a unique cross-drilled and slotted pattern for improved pad bite and expulsion of water/gases, and an e-coating finish to provide long-lasting corrosion protection. This is a single rotor; for a complete front axle set, it must be paired with the Right Side rotor. Included in this series: 1x StopTech Sport Rotor (Left) PN: 127.62124L. Recommended matching part for right side: 127.62124R.