The StopTech Sport Drilled & Slotted Brake Rotor is a 1-piece direct replacement upgrade for your factory braking system. This left-hand (driver side) rotor features a unique cross-drilling and slotting pattern that improves heat dissipation, aids in the removal of brake dust and gases, and enhances overall braking performance in both wet and dry conditions. Finished with a high-quality black e-coat for superior corrosion resistance on the non-friction surfaces. Note: This is an individual left-side rotor. For a complete axle set, please order the corresponding right-side part: 127.62150R.