All bearings come with new races.
The bearings in the steer head have a # on them, any good bearing place can get you a replacement bearing. I've never tried it on a part # for a replacement. Ya might get the part # for the EOM and call a bearing place to see if they can interchange it.
I never looked in
http://www.jkozloski.com/generic_parts.htm here for a replacement, so take a look 1st. Also save this link it is worth it's weight in Gold. I've used it many many many times.