I've installed the Givi TN355 kit today. '16 ST, Non-ES.
I suspect they'll be "One and Done", but at the price point, I'm OK with that. I read the previous poster's comments to the contrary. I hope they will take more than one hit, but I also hope to never find out!
I read elsewhere that it's important to install the middle pieces first, under the cycle's front end. Yup, that's for sure, do that first! Use hardened sockets and a breaker bar for the engine mount bolts. I broke a good 6 pt. socket figuring that out.
My considerations were, clearances, for myself (in a getoff), and previous installed stuff (a Denali Soundblaster horn under the left brace, using a Twisted Throttle mount piece attaches to the (Stator?) housing down there. Anyway, plenty of clearance after bars installed, and I *think* the horn will survive a 0 MPH hit/tipover). Looks, no "big ears" sticking waaaay out. Ability to take one hit, then replace'em, if needed (I don't like my cycles to appear damaged for long. I clean things up quick if I'm keeping it). Ease of adding a lower crash bar (maybe later, maybe not).
So, these Givi bars kit TN355. Fitted right up. I was short 2 washers. No biggie, but annoying.
Pretty far into the install, starting to tighten everything up. There are 2 "headless" bolts, per front end brace (2 braces, and 2 bolts per brace: One Left and One Right side). The bolts are press fit into the brace. The side bars attach to these as part fo their mount points. So, they're press fit and have no "head". They're basically a threaded shaft sticking out of the brace. You torque on those, and they pop out of the brace. Yup, then you're left sitting there, OK *now* what? The side bars don't brace up now...
I think the engineers did that so they would sheer away in an "incident". They would absorb and transfer some energy, then give way. Well, *that's* not gonna work anymore...
I torqued the 1st one good, and it sheared off. I did the 2nd one, on the other side, on purpose.
Find two more bolts, washers, and nuts, of correct length and bolts stuff together. Whew, almost screwed, looking at how much (not much after all), I was gonna have to take back apart to fix it.
They look sturdy, solid. Yup, I would buy this again, (and hope I never have to!).