The Shimano Dura Ace 9000 crankset has the not-yet-available Dura Ace 'cross rings with a 46-39 combination. Note that these are not the hollow machined outer chainrings like the versions that come
British National Cyclocross Championships 2022 winners' bikes gallery - BikeRadar
Is Shimano 12-speed heading for CX? Watch Mathieu's bike being built up with new Dura-Ace - Cyclocrossrider