The StopTech Slotted & Drilled Sport Brake Rotor (Left Side) is a premium 1-piece replacement brake disc designed for enthusiasts seeking improved cooling and braking performance. Features include: 1. Cross-drilled and slotted patterns for enhanced heat dissipation and gas venting. 2. Superior resistance to brake fade under high temperatures. 3. E-Coating finish to protect against corrosion on non-friction surfaces. This part is a single left-hand rotor. For a complete front axle set, it must be paired with the right-hand equivalent (PN: 127.04004R). Specifications: Diameter: 300mm; Bolt Pattern: 5x120. Set components: 1x StopTech 127.04004L Performance Rotor.