Originally Posted by
wsteve464
Or you can use an mtb RD.
Originally Posted by
srode1
You can mix and match any of the Di2 components.
Keep in mind you can mix and
almost any of the Di2 components. Important to remember is that
all derailleurs need to be either road/grx or mtb.
You
can not use road/grx derailleurs with a mountain bike derailleur.
Also, you cannot mix 10-speed derailleurs and 11-speed derailleurs
