StopTech Sport Rotors (Drilled & Slotted) are 1-piece direct replacement brake discs for your factory brake system and stock calipers. These rotors offer improved cooling and better bite compared to blank rotors. This part number (127.44083L) refers to the Front Left (Driver Side) rotor. For a complete front upgrade, it is recommended to pair this with 127.44083R (Front Right). Features include: directional cross-drilling and slotting to vent gasses and dissipate heat, a durable black e-coat finish to protect against corrosion on non-friction surfaces, and a high-carbon metallurgy for reduced noise and improved crack resistance.