After months of deliberation, I finally decided to add the Givi E-21's to my K7 B1250s. I bought it with the Suzuki top box and mount already installed. It seems to be a very sturdy mount.
I wanted a narrower profile than the Givi V35/PLX rack combination (or the stock Suzuki equivalent). Did a lot of research, and got great feedback from people here. Looked like the Givi PL 539 with E21's would be just the ticket.
So I spent this weekend installing the racks. It was a much bigger hassle than it should have been, but that was mostly from the previously owner cross-threading a mushroom cap allen bolt which required some drilling and screw extraction. I did have to find some spacers to fill the gap where the Suzuki grab handle was removed when the Suzuki top rack was installed. Here's a picture of the solution I found at the local hardware store:
These are chrome steel spacers that are almost the same thickness as the supplied ones. Over all it's a very solid mount, although I agree with other posters here that the turn signal relocation is less than ideal. I ran the wires under the tail light lens to avoid having to extend the wiring. The wide angle accentuates the wide look; it's really not wider than the handlebars.
So here is what it's supposed to look like. I say supposed to because... there are issues...
With the topcase installed you can't open the E21's. Major problem, and totally unforeseen. Seems I need to move the topcase back about 4 inches to give me enough clearance. This would not be bad, since it would also provide more passenger room.
I'm thinking I can get a spare mount plate and attach it to the Suzuki rack to offset the topcase. Anyone done this?
I went for a ride with just the E21's today, and did not feel they were too wide. They are about 31" installed. My soft bags were about 28", so it feels about the same, although more secure. Here's one more picture of what I hope it will look like soon.
Didn't have to lower the Yosh pipe either, as there was plenty of clearance.
I'm too far in to give up now...