This large-bore sport-touring bike was a delight to ride. Rather than repeat all the good things that have been said about it, I refer you to the GPz-1100 Mailing List Page and the GPz-1100 home page. I’ve been unable to find a bad review anywhere. Read some good ones at motorcycle.com, motorcycle.com again, and ASTRA.
Here are some of the modifications I made over the years.