Hey I know they use these on the older GP and track bikes (never see them on road bikes) but can anyone tell me the difference/benefit of the fuel tank in the following video at the 0:58 mark vs the stock tank and fuel lines? Looks like it has 2 filler caps (even though I doubt thats what it is. Also a hose maybe for overflow or something for being on the track with the heavy lean angles? Help me learn!
Beautiful bike. I've never seen that swingarm before. The hose is a breather line because the fuel cap(s) is/are sealed. The bike would have to be on its side for it to leak gas out of it. Hot days and a really full tank may dribble some from expansion as well.
I don't think there's a benefit other than a simpler and lighter cap design. The composite tanks may also require more venting as well but I don't know. All my plastic dirt bike tanks have vented caps.