I'm considering a similar setup. What model is the Avian handlebar? Do I need to order an adapter from the manufacturer (Avian)? Do you know if it's possible to order the seatpost with setback?
It's the Avian Falcon. I got it off AliX, but it was 305gr instead of the 280gr they list...
So maybe they sell rejects or something...
You do not need an adapter, the spacers are included and fit the frame.
Ofcourse it also included a nice top cap, but I will install that after I have dialed in my fit