Ok I'm saure if it could be done everyone would have already done it but I still have to ask. Has any one found a way to mount the 4.2 gallon tank that touratech is selling for the x-challenge? I know our frame is a little different but there has to be a way to hack this together and up range. With the x-tank costing 500 euro or so and only giving 1.7 more gallons of capacity really makes me want to find a way to do this The idea of having my xcountry but with 6.6 gallons and a range of about 400 miles really sounds nice. http://www.touratech-usa.com/media/VXqoCZ/09-049-0130-1.pdf To be clear: I don't work for touratech and am not selling their product... I don't think it can even fit on our bikes.