Any old chain will get you to the finish line, but if you want to get there faster, smoother and better than anyone else, Dura-Ace is on your side. This new Shimano chain has been redesigned this year to be even lighter and more durable than the one before it.
Redesigned outer and inner plates improve contact with gear teeth, reduce chain drop and increase shifting performance under load
Maintains rigidity longer so you get smoother, more stable performance, even as the chain wears
Quieter than other designs
Hollow pins and perforated plates shave grams ('cause every one counts)