Chaîne Shimano Dura-Ace CN-HG901 11 vitesses

Shimano chain for the named speed count (11- or 12-speed) — the wear-part in your drivetrain that determines both shifting quality and how fast the rest of the drivetrain wears out. A stretched chain eats cassettes and chainrings; running fresh chain matched to your cassette speed is cheap insurance. Dura-Ace is Shimano's top-tier road groupset — the same parts the WorldTour peloton runs. Weight-optimised, finished to the tightest tolerances in the range. This is the Shimano Dura-Ace CN-HG901 11-Speed Chain.