StopTech Sport Slotted & Drilled Brake Rotors are 1-piece direct replacement brake discs for factory brake systems and stock calipers. These rotors provide improved cooling, better bite and shorter stopping distances. The cross-drilling and slotting helps at wiping away debris and hot gases that form between the pad and the rotor. The durable black e-coating on the non-friction surfaces protects against corrosion. This item is a single Left Front rotor. Part Number: 127.45051L. Components: 1 x StopTech 127.45051L Left Side Brake Rotor.