Unexpected Hole in Downtube

[scruffmeister]

Received a Canyon SF SL 8.0 Di2/Disc the other day. I noted that there is an unexpected hold in the down tube between the bottle cage bolts. It's crudely plugged by a plastic plug that can be removed with fingers and is attached to nothing internally. Biggest concern is that the plug is not watertight although I can obviously use some helicopter tape for this purpose.

Photos below, has anyone else seen anything similar on their Canyon, any ideas what this is about?

[djbowen99]

My Ultimate has it as well, it's used to secure the rear brake cable in the frame to stop it from rattling around. I know mine was attached becaause i swapped to eTap from Shimano and was able to feed the new hydro cable through it and then secure it.

[deepakvrao]

Seen it on my new Canyon Endurace too. Had no idea what it was for though.

[mattr]

Why does water tight matter?
The whole frame is full of holes.
They all leak.

[marioc]

On Canyon disc brake bikes that is used to tighten the hydraulic hose to prevent rattling noises in the downtube.

[scruffmeister]

OK, so good news then that everyone seems to have this hole. I guess they forgot to attach my hydraulic hose to it... I haven't noticed a rattling of the hose so will probably forget about it for now!

[1415chris]

Just curious, how to attache cable to this?

[TheRich]

Just curious, how to attache cable to this?

With a zip tie, like the one in it now...except you capture the brake hose in it.

[1415chris]

Simply as this, thanks.
So somebody missed the point, I mean the cable