Heres mine, have put about 8k miles on this setup. Its a 5 aluminum fuel cell with rubber mounts for the stock luggage rack. I wait untill my primary tanks hit reserve, then turn on the petcock for the aux tank. It fills the front tanks, and doubles my range... I like it And no the 40 extra pounds isnt very noticeable and I still have room extended two week trips. You do have to be mindfull of things, like "do not turn on aux petcock untill there is enough room in primary tanks". I never made that mistake. My last dual sport (DR650) had an 8 gallon aqualine, and sometimes I would run a 3 gallon aux... now that puppy had some range! I'll have to find a pic. of that one!