I'm so impressed with these crash bars I ordered (but have not installed yet) Heed bunker crash bars for my 2015 Triumph Tiger as well. I took installation pics for an instructional post for the Tracer but haven't got off my keester yet to post them. Until then, feel free to post an installation question and I'll see if I can be of help.
Just looking at my install pics now, I will say this... On the long(er) shaft threaded at each end provided by Heed I put RED LOCKTITE on the left side threads and BLUE LOCKTITE on the right hand threads. This was so the right side nut would bust loose first and then the shaft could be slid out the left side. However, I don't recall why that was important... it just was.
I noted on my pics that 2 washers got used on the left side of this shaft (under the nut, and between the crash bar and the bike) but the right side only used 1 washer (just under the nut)
I also have a pic of a nylon tipped hammer and a long, slender punch... so presumably those are needed... to punch the old shaft out and to tap the new long(er) shaft in without damaging the threads.
Sorry for the shaky recall. I blame old age, whiskey, and weed during the 80's. Oh, and my mother (says Freud)