Why Is the Shimano CN-6600-10 the Correct Chain for Ultegra 6600 Drivetrains?

The Shimano CN-6600-10 is the OEM-specification 10-speed chain for the Ultegra 6600 generation groupset, built with Shimano's HG-X directional chain technology for smooth, reliable shifting across the full cassette range. The directional construction ensures clean front and rear shifts at every cadence, delivering the precise performance expected from Ultegra-level components. The right replacement for any 10-speed Shimano road build.

Compatible with all Shimano 10-speed road drivetrains. Ships at 116 links. A Shimano 10-speed connecting pin is required for installation and is not included.