The oversized tanks (6.6 gal) give you a range close to 400 miles on our bikes. Which means it is unnecessary. If you look closely at some of the earlier photos our buddy on the WR you can see he is strapping a half gallon liquor bottle to his handle bars with a thick pad taped to it. I have also strapped bottles to my front and rear fenders using slits cut through the fender with Voile straps to hold the bottle on. These straps are critical to our setup. They are very strong and dynamic which hold bottles and bags tight. You also need to think about Water. It is starting to cool off in the desert this time of the year but we were carrying 100 oz. Camel back with at least another half gallon for 2 days in the desert. On warm days you will go through that in a day. Have a great ride.