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Shimano Dura Ace HG901 11-spd ChainThe new symmetrical 11 speed Dura Ace chain uses hollow pins for low weight, PTFE coating for smooth shifts and offers increased durability. Who cares about a stupid chain? Id like to see you ride your bike without one, Mr. Smartypants. Paired with your Dura Ace 9000 components, youll be provided with perfect shifting every time. For 11 speed drivetrains Super narrow Hyper Glide(HG) design Hollow pins 114 links Weight: 243g w Quick Link About Shimano

Sprocket Finish - Chrome plated

Lubricates and protects

efficient shifting throughout the extended gear range

Wider bearing spacing for uniform load distribution

20/24 spoke count

One-way bleed for easy and clean servicing

Materials: Alloy

or hairspray required

the B17 is ideal for sports touring

Sizes 700 x 23c

Fits all Campagnolo® cassette lockrings

Corrosion-resistant grey finish on inner and outer plates