Aerospace Components offers a variety of high-quality rear brake kits that provide maximum stopping power for virtually any car. Their brakes are CNC-machined from 6061 T6 billet aluminum and withstand more pressure than any other cast brake kit. All kits come with drilled heat-treated steel rotors and everything you need for installation:4-Piston Billet Aluminum CalipersMounting BracketsGrade 8 HardwareBillet Aluminum Brake Hats with Multibolt PatternsBrake Pads11-3/8" Diameter Drilled Rotors