Originally Posted by jeff3069

Hello all!
Have not been here for quite awhile

I would like to (buy and) install a new 11 spd group on an old cyclocross bike (of 9 speeds).

1. The current setup of 50/34 and 11-34 works alright for me.
2. in the new build, I prefer to use a 50/34 Dura Ace 9000 11spd crank that I have.
3. I am told that a long cage XT RD (have a long XTR one now) is not going to work with 105 sifters, and was advised to get a GRX group

My question is, please, what 11spd shifters, derailleurs should I buy so that they will work well with the above crank?
I'd be happy to have a cassette with even bigger cogs (36..40)

Thanks!!
J