Use the 7900 crank. The 7900 big ring is designed for the Di2 FD, other cranks with less stiff rings, won't perform as well. If BB30-use the Wheels manufacturing adapter. If pressfit BB30, use the Enduro adapter.aaronm said:Getting a new BMC TeamMachine frame with BB30 - and moving my DI2 over to it.
Use the Shimano adapter to run the DA 7900 cranks?
-or-
New BB30 crank set? if new BB30, which?
Worried about shifting performance, stiffness, and of course weight...
Thoughts?