Hayes D-Series 6-Bolt Rotor The Hayes D-series of rotors are compatible with the new Hayes Dominion disc brakes. The rotors features a standard 6-bolt pattern and comes in either 180mm or 203mm size options. If you just bought a new Dominion brake or just had a crash that damaged your current rotor, it's time to pick up a new rotor. Features6-bolt design180mm or 203mm options available Compatible with Hayes Dominion brakes | Hayes | D-Series 6-Bolt Rotor 180Mm