Off the top of my head I think it's 13 x 3 or close to that. It's really an automotive tank. If you haven't noticed the Triumph puke tank vents antifreeze right in front of the back tire. At least this vents antifreeze off to the side. It vents from a tube at the bottom.
look at my picture #4 - that is the overflow tank in front of the ramair filter, if you are going to open up the bearclaw, you don't need to move the puke tank. and it looks better
look at my picture #4 - that is the overflow tank in front of the ramair filter, if you are going to open up the bearclaw, you don't need to move the puke tank. and it looks better