Shimano Ultegra CN-6700 10-Speed Chain

In following with Shimano's trickle-down technology from group to group, the new Ultegra 6700 chain has moved to an asymmetric design like the Dura-Ace 7900 chain. This means that the inner plates are different from the outer plates. The inner plates are made to mate more precisely with Shimano 10-speed cassettes so shifting into larger cogs is quicker and wears less on the chain and cassette. The outer plates are mated to the ramps and pins on the large chainring for faster shifting into the big ring. Apparently, the larger outer plate also lowers the likelihood of chainsuck (the chain falling between the crank and bottom bracket shell. The plates are also perforated to save weight without sacrificing strength. When connecting the chain, the standard 10-speed connecting pin is used. 116 links. 276 grams.