StopTech Slotted Sport Brake Rotors are premium 1-piece replacement brake discs for factory brake systems and stock calipers. They are specifically designed for the Ford Focus ST with the 335mm (13.2 inch) front brake upgrade. Key features include: unique 'Power Slot' vacancy for improved heat dissipation, specialized alloy for resistance to thermal cracking, and an E-Coating finish for corrosion protection. This component is the Front Left side rotor. Included items: 1 x StopTech Slotted Performance Brake Rotor (Part No. 126.65146SL).