My Shimano 10-speed bike is due for a new chain and cassette and I just ordered a 12x27 5700 cassette and 6600 chain from Nashbar. The bike has a triple Ultegra crank.
I was going to order a 5700 or 6700 chain but both Nashbar and Jenson list these chain as "for double chainrings only" while Shimano's web site says nothing about that limitation. I bailed on the order and went with the older 6600 version but what gives? How can the newer chains be double specific when Shimano makes triple cranks in both 5703 and 6703 groups and lists only one chain for each group?