Crown races are individual to each headset, although the ones which use the same bearing cartridges obviously tend to be very similar. Fortunately, there is only one size for 1⅛" headsets, so you don't have the JIS/ISO incompatibility issues which afflict 1" headsets.
Crown races are individual to each headset, although the ones which use the same bearing cartridges obviously tend to be very similar. Fortunately, there is only one size for 1⅛" headsets, so you don't have the JIS/ISO incompatibility issues which afflict 1" headsets.