It's called a helmet set wire.
Used to lock helmets to hook under seat.
See page 68 of Owners Manual.
While it is pretty useless for securing a helmet it is also used to "hang" the gas tank during servicing.....
I recently put a helmet lock on the handlebars that works quite nicely.It's not likely that I'll ever use the cable for its intended purpose. It's only utilized when securing 2 helmets.
I recently put a helmet lock on the handlebars that works quite nicely.
John