The Shimano Dura-Ace Di2 (Dual Integrated Intelligence) features the most enhanced level of shifting technology. Put to the test in competition and used in victories by pro riders in every condition, including the 2012 Tour de France Team Sky.
Incredibly reliable, the Dura-Ace hub features revised seals for smooth operation and increased durability. Cup and cone construction offers simple maintenance and better performance. Lightweight and low friction, the Dura-Ace offers everything you need in a hub.
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