Can someone with a straight TRX check..

[steve speed]

the valve is more a flame trap than anything else , there should be one on the carb breather as well

[G Beale]

Will this wonky, out of focus picture held Dave ?

[Mincehead]

It`s an unnecessary if you`ve done the FCR conversion,I just left mine open to atmosphere after I fitted the FCR`s.
Although,I did put some chain lube down it to protect the frame from rot,I`ll maybe put a short piece of silicon hose on it and block the end off at some time in the future.
G Beale`s correct it goes to the underside of the stock airbox,possibly as a drain,which to be honest was never a very clever idea!
Airbox condensation being routed into a steel frame,recipe for insidious rot if you ask me.
Even if NOTHING is connected to it there`s no difference whatsoever to how the bike will run.
Oh and those valve/thingys that folk are mentioning?
Yep,they`re to check any ignition of fuel/air mixture,instead of it blowing flames out the open ends of the tubes.The resulting small explosion takes place inside the small chambers.
An over-the-top Japanese safety feature to be honest.There`s actually THREE on a stock bike,one from each carb and the one being spoken about in this thread.
ALL of them are just a safety feature nothing more.You could use open tubes as long as they were routed away down to the underside of the bike,away from the general area of fuel.

[schmiffee]

The one on my import is routed to the bottom of the bike...however it has a plug in the end of it so I guess it is pointless being diverted down there then??