Apologies for slow reply have been hiding in a tent. It is a band on mech that's needed, the seat tube is 28.6mm.
James, di2 cable length is dependent on a number of factors, so need to know how wide your bars are, how long your stem is and how many spacers you are going to run first.
They would have, but I realised that you are using the new fancy hidden junction box, and I don't know how that measures up. I have a build coming up and can let you know once I've done it? Just don't want to give wrong lengths...
Apologies for slow reply have been hiding in a tent. It is a band on mech that's needed, the seat tube is 28.6mm.
James, di2 cable length is dependent on a number of factors, so need to know how wide your bars are, how long your stem is and how many spacers you are going to run first.