The new 10-speed Dura-Ace chain is lighter by an astonishing 24g, yet maintains the same durability as the 9-speed predecessor. The chain also adds a new fluid-smooth feel to the performance of the overall system. The rollers are the same width as 9-speed, insuring the important strength and durability. Weight reduction and the narrower 10-speed profile were achieved by minimizing the contour of the side plates.

The super-flush surface of the new plates glides more smoothly across the entire cogset, netting a lighter, smoother, and yet remarkably more durable drive train.
 

Specifications:
 

• Dura-Ace level CN-7801 super-narrow HyperGlide 10-speed chain
• Replaces CN-7800 model with updated 3-groove connecting pin (3-groove pin is not compatible with original 7800 model chain)
• Use: SH-27103 (5/bag) or SH-27104 (50/bag) for replacement pins
• Zinc-alloy plated pin and roller link plates
• 5.88mm pin width, 2.32mm roller width.
• Weight: 280g
• Length: 112 links
• Supplied with 2 x SH-27103 joining pins.