StopTech Sport Slotted Brake Rotors are premium 1-piece direct replacement brake discs for factory brake systems and stock calipers. These rotors feature a unique vacuum-cast high-carbon metallurgy for improved durability and heat dissipation. The specialized directional slotting aids in the dispersal of heat, brake dust, and water, ensuring a clean pad surface and consistent braking performance. Black E-Coating provides long-lasting corrosion protection for non-friction surfaces. Note: This part number 126.40090SL represents a single Front Left rotor. For a complete axle set, please order the corresponding Front Right rotor (126.40090SR). Specification: Diameter 319mm, Thickness 28mm, Bolt Pattern 5x114.3.