Shimano Dura-Ace CN-HG901 11-Speed Chain | Fits Dura-Ace R9100

Super narrow lightweight 11-speed HG-EV symmetrical design chain for smooth shifts and maximum durabilityOuter plate design has been developed to reduce the chance of chain suck.

Sil-Tec surface treatment technology (PTFE plating) on inner and outer links and rollers that is smooth running and increases durability. Zinc-Alloy plated inner and outer links. Hollow pin for added weight saving.

The inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedalling, increased rigidity and near silent running.