The new 10speed DuraAce chain is lighter by an astonishing 24g, yet maintains the same durability as the 9speed predecessor. The chain also adds a new fluidsmooth feel to the performance of the overall system. The rollers are the same width as 9speed, insuring the important strength and durability. Weight reduction and the narrower 10speed profile were achieved by minimizing the contour of the side plates. The superflush surface of the new plates glides more smoothly across the entire cog
)
