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?
New BB30 crank set? if new BB30, which?
Worried about shifting performance, stiffness, and of course weight...