Originally Posted by C5!
well might be, although it looked 1/4 to the eye.
just checked the hose on the bike it says " FUEL 6 x 11 BMW " I may have wrongly assumed 6mm ID, 11mm OD
I'd be pretty sure that's the right size, and 6mm is just slightly less than 1/4" so a 1/4" hose and filter should work. My question then is if anybody's found a filter with that size inlet/outlet that is made to work with fuel injection (high pressure). The only ones I find that size are the cheap plastic or glass filters that are made only for low pressures (carbs). I'd bet there is a auto filter for some european or japanese model cars that would fit the bill, but I have no idea how to find that.