Just to let you know Givi don't list a tank ring and tank bag for the 890 V2 . Luckily the fuel cap is the same as the 1200 multi. Fitting kit BF11 is the one you need . Hope this helps someone
Personally I noticed that the standard height of the plastic ring has some interference with commands on the right side of the handlebar, even with the smallest bag, so I bought the Ducati small bag (which is, of course, a Givi...) that has also a higher plastic ring. I find the higher plastic ring ugly, without the tank bag, but I just "live" with the tank bag always on the bike.