CNC machined adapter for floating (spoke mount) brake rotors on Arlen Ness® cartridge wheel hubsAllows the use of factory '14-'24 FLT spoke mounted rotors on aftermarket billet wheels with 3.25'' bolt circleAccepts both factory and aftermarket 11.8'' front spoke mount style rotors Forged from aluminum and CNC machined to a perfect finish Coped cut out design follows the sculpted lines of Ness cartridge hubs & reduces weight With an installed 11.8'' spoke mount type rotor, the adapter becomes a lightweight complete performance rotorIncludes hub mounting hardware and accepts factory rotor hardwareDoes not fit Flare 5 or Drift Ness wheels.Designed only to be used on all Arlen Ness® wheels with cartridge type wheel hubs