ShimanoDura-Ace CS-R9200 12-Speed Cassette(Return to Product Page)

The new 12speed Shimano cassette is part of the updated groupset. Like all of the Dura Ace components it's well crafted and allows for smooth and efficient shifting.

As a person who climbs a LOT the 11-34 is perfect for both rolling hills and long sustained climbs, the weight is managed by balancing titanium cogs with aluminum, adding strength where needed and lightness in concert.

I will use it with my new DI2 set up when I get all the parts.