I think the new radios are weatherproof allready from the factory. The 1997 and before had a weather covers from the factory. I have a 2002 Ultra and it has been in the rain and dust a plenty with no problem.:s
Thanks, WILL2002. Got the same info from the local HD dealer. They also told me that radio covers for bike model year 1989-1996 are still available. Part# 76283-89A .