StopTech Slotted Sport Brake Rotors are premium 1-piece replacement brake discs for your factory braking system. The directional 'Vac-U-Slots' help evacuate gasses, dust, and water to increase braking performance and improve cooling. This part number (126.33099SL) represents the Left Rear Slotted Rotor. Features a black e-coating for superior corrosion resistance and high-carbon metallurgy for quiet operation. Component List: 1x StopTech Sport Slotted Brake Rotor (Left Rear) p/n: 126.33099SL. Specifications: 282mm Diameter, 12mm Thickness, 5x112 Bolt Pattern.