Front+Rear R1 Carbon Geomet Slotted Brake Rotors + Ceramic Brake Pads Package Includes 4 Brake Rotors And 8 Ceramic Brake Pads High Carbon Metallurgy -Increases Friction And Reduces Pad Squeal GEOMET Anti-Corrosive Coating To Provide Rust Protection Mill Balanced To Reduce Feedback And Rotor Vibration Symmetric Split Core Castings For Strength And Stability