The Shimano Dura Ace 9200 crankset catches the eye immediately! The striking cut-out in the Shimano Dura Ace 9200 crank arms prevents superficial wear on the crank and gives more freedom of movement with the shoes. The A-symmetrical mounting points of the chainrings offer the most efficient power transmission. The shifting speed under load is also very impressive. This is partly due to further optimisation of the shifting guides on the inside of the chainrings.