HI folks. Here's a recap of how I installed the Givi SR357 this past week on my '14 ES.
I stole a lot of good ideas from the kind folks who posted previously and somewhat adapted.
As most know, there are 5 bolts that attach the SR357 to our FJR subframes.
Two front ones under the passenger seat and 3 in a triangle pattern back at the tail.
I replaced all 5 Givi supplied allen bolts with longer stainless steel allen bolts so they fully engage all of the available threads in our subframes.
Sizes noted below, all are 1.25 pitch.
-for the two points under the seat I replaced Givi part #2 M8x20's on the diagram with M8x30mm bolts.
-there was a slight gap present when I later got all five mounting points square and evenly supporting the SR357.
-so I slipped two per side ss M8 fender washers (all metal, no rubber) between the FJR subframe and the SR357.
-the slightly wider fender washer spreads the load nicely. That took care of the two points under the seat.
-for the three tail section bolts I replaced Givi diagram parts #3 two M8x45mm and part #4 one M8x35mm
with three M8x50mm ss allen bolts.
-there was still a slight gap above the rear bushing of the rear most bolt, however, it was not as large as
I've seen in most pics. I believe the washers under the passenger seat bolts help square things and
keep the SR357 from trying to sort of rock forward.
-regardless, still had the small gap as most commented on, so slipped in a M8 fender washer to fill the gap.
Now the rack sits nice and square at all five mounting points. I was able to thread all five bolts pretty much the whole way in by hand. That's how nice things lined up! Tightened down by feel to "good 'n tight". Solid mount, happy me
.
Hope this summary helps others re: go buy the bolts, washers etc then start...... It is a great product once installed.