What model of Goldwing are you trying to make lighter? 1500s and 1800s will always be big and heavy unless you trike them and they are much more manageable.
1100 Interstates and Aspencades get stripped and turned into naked Wings or Standards.
The GL1000 is bare bones to start out with, but owners have added touring packages.
Retired trike builder/motorcycle tech.
Not to be funny but many of us pack 20-50 pounds of extra weight. Another source of weight reduction for overall weight of rider and bike. You won't find those kind of numbers in lighter weight bike parts.
2003 Honda Silverwing ABS
2005 Kymco Bet and Win 250
Funny or not it's the truth. Another source of weight reduction might be to address a problem mentioned in another thread. Seems many members experience hip pain on long rides attributable to a too fat wallet. Guys I can help with that.