Tube?

Just a quick update. No ride today because it was too cold and windy outside. I know I'm a wuss but at least im a warm one. As for the tube that was hanging off, I went to the dealership yesterday and checked out the floor model. It had the same tube hanging down, so I'm just gonna assume that it is a normal thing. The sales person was busy with other customers so I didn't ask and just hung around for a while and talked with Herman. Herman is a super friendly german fellow that has been at the dealership every time that I go. He rides a BMW K1300S, an absolute monster with 175hp.