The StopTech Sport Rotor (Drilled & Slotted) is a 1-piece direct replacement brake disc for your factory braking system. This 'Right Front' rotor offers improved cooling and biting power. Key features: 1) Cross-drilling and slotting aids in heat and brake dust dissipation. 2) E-Coating finish protects the central hub and vanes from corrosion. 3) Better initial bite and wet weather response. This part (127.39035R) consists of one single right-side performance rotor. Technical Specifications: Rotor Diameter: 275mm, Height: 46mm, Thickness: 25mm, Bolt Pattern: 5x114.3.