Vivid racing has put together this stage 1 big rotor brake upgrade for the Porsche 996 turbo or c4s from 2001-2005. This brake upgrade includes 4 agency power plus 1 caliper brackets to increase your rotor diameter at all 4 corners from 330mm to 350mm while retaining your factory calipers. In addition to the brackets, we also include 4 brand new OEM drilled Porsche 997 turbo rotors needed. This brake upgrade is a great away to improve your stopping power and help fill the inside of those wheels with out spending several thousand dollars on a big brake kit.