The revised super narrow Ultegra chain features redesigned outer and inner plates to reduce chain drop and to improve contact with the gear teeth and smoother shifting even on high loads. Perforated plates save weight.
Chain type is super narrow HG for 10-speed cassettes
Includes one connecting pin.
Unidirectional (asymmetrical) design uses different inner and outer plate chamfers and dimensions to accommodate the different shifting requirements when moving the chain inward or outward.