Shimano Dura-Ace CN-7901 10-Speed Chain. The new asymmetric design of the Dura-Ace Redesigned plates that improve the contact interface with the cogs. Other improvements to the links provide greater durability and life with less noise and smoother function. Use of hollow pins drops weight by over 18 grams even with the addition of a quick connection / removal link.

---

Features:

New shaped outer plate

New designed both outer and inner plates for better contact with gear teeth.

Hollow pin

Perforated plate

Enhanced parts size around pin. Less flexure to affect shifting by enhanced press-in method

Weight:252g

UPC: 689228414075
Manufacturer Part Number: 7900