The 034Motorsport 370mmx34mm 2-Piece Floating Front Brake Rotor Upgrade Kit for the 8V.5 Audi RS3 is a complete replacement brake rotor kit, designed to work flawlessly with the factory front calipers found on the 8V.5 RS3. Weighing in at approximately 22lbs, each rotor reduces rotational weight by 5.4lbs on each corner over the factory 27.3lb rotors! While reducing weight, the rotor retains proper thermal mass in the rings to adequately capture heat, while utilizing 72 directionally curved vanes to forcefully flow cool air through the rotor to dissipate heat.