Chrome plated steel. For Keihin CV (Constant Vacuum) carburetors or Delphi EFI (Electronic Fuel Injection) (excl. e-throttle) pattern. Used to mount aftermarket air cleaner assemblies with a flat backing plate.
Fits: > 90-17 Evo B.T. and Twin Cam with CV or Delphi inj. (excl. e-throttle