I got some of that stuff.
Mine is pretty solid and not flexible at all.
I found this quite handy when taking the rear tub on and off because it pushes itself over the fuel tank spout providing you get it in the right place. You can't put it on or take it off without removing the rear tub but once installed I don't think it needs to flex much?
of course it does mean you have to take the rear tub off to fit. Oh joy!