Ultegra 6800 chain ring on a Dura ace 9000 crankset. I wanted to save some money so I ordered ultegra 6800chain rings because you always read everything is interchangable between these systems. Buy As you can see it's not sitting straight. 2 spider ...
Which Shimano Chainrings to Use With the Quarq DFour? - Power Meter City
Shimano Dura-Ace FC-9000 Chainring 50T for 50-34T | Sigma Sports