i have to switch to reserve at about 140 miles every time.i usually fill up after switching to reserve and i can always get a hair over 3.5 gallons in there.i did run the bike completely out of gas once,i was able to get 4.1 gallons and some change in the tank but that was after my buddy brought me a can of gas and i put some in to actually make it to the gas station,so i would say 4.4 is pretty close.oh i've also seen fuel capacity listed at 4.39 gallons on the spec sheet at some websites,but that's just splitting hairs
