Can anyone briefly advise on compatibility between an Ultegra Di2 6870 2x11 groupset and other components, such as the EW-RS910 ot the STI levers ST-9070 ?
Thanks in advance.
I can do better than briefly advise, I can give you the link which tells you what is compatable with what -
This is also quite useful -
But to briefly advise, the Di2 parts are compatable with each other providing you don't mix a FD from one range with a RD from another - they both have to be in the same range. So you can use a 6870 FD and 6870 RD with 9070 Levers (I actually run the reverse on one bike)
Exactly what I was looking for