Please keep in mind that anytime I share or give advise about a motorcycle, unless I state otherwise, I am always referring to GL1800's and no other.
Many years ago when I was rehabbing Valkyries, a friends wife worked at a machine shop. She made me a dozen shock bushings out of PTFE plastic. Those things lasted forever.
2007 Goldwing w/MT Adventure conversion
IBA: 65855 SS1000, National Parks Tour, Master Traveler Award
https://www.dosgreengoes.blogspot.com
If they have a metal bushing in the center, throw the bushing in the freezer for a few hours
This will shrink it and make it easy to install
Nuff Said," Were Burnin Daylight, Lets Ride"(Sober 37 years)
Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL