Only the ultegra 6700 is for 10-fach and all the others 11-Fach.
With 11-fach is only 11x40 cassette.
I have seen that also stromer st2s and wanted to have so.
When I will cadence to buy a Hometrainer or a racer. I need to work 28 minutes for 20km and this is important. I want to go fast and use the full speed from turbo s.
I'm 57 yrs and 86 kg
Best regards Michel
My cassette is 11x28 this is my set up you need perhaps another set up. The Chainring can you take in 50,52,53,54 and cassette in 11/27,11/28,11/32,11/36.
That you can try everything , do not know how fit you are
This set up is better for me in 11 / 28.The circuit is now much quieter and much more fun. In 11/40 I did not need the last 3 pinion.
Yes I install himself and no difficulties and yes is the shimano di2 battery.
I have changed Dura-Ace crank with bottom bracket, rear derailleur ultegra RD...