Shimano XTR / Dura Ace CN-HG901 Chain 11-speed - with Quick Link - 138 Links
The Shimano CN-HG901-11 is a premium 11-speed chain featuring the special asymmetric HG-X11 plate design and proprietary SIL-TEC surface treatment. Incl. SM-CN900 Quick Link connector.

SIL-TEC
SIL-TEC is an advanced surface plating technology increasing both performance and durability. It adds a low friction surface treatment that runs smoother and lasts longer.