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
DURA-ACE 9000 SERIES | SHIMANO BIKE COMPONENT
DURA-ACE 9000 SERIES | SHIMANO BIKE COMPONENT
Hands On Bike: Shimano Dura-Ace 9000 vs R9100: Crankset