I wouldn't get your hopes up too much on a "proper" bigger tank (vs a strap on the side or rear rack type). Particularly not an affordable one or one any time soon. EFI bikes are not like KLR's/DR's/DRZ's Not only does the EFI make this more difficult, but so does the parameter type frame with the airbox located where the tank is on "regular" bikes This bike holds the same amount of fuel in the same place (yea under the seat) as the G650/Sertao. Ever see a tank for them? Tourtech sells a 9 gal one..... for $2,600 :huh The X-challenge with basically the same configuration only ever got the $800-900 great white whale Tourtech/Safari one. The X-country never got one at all and it at least ran for a few years longer. Safari might make one in time for $800, but I wouldn't count on someone like IMS making an affordable one.