SHIMANO Dura-Ace CS-R9200 Dura-Ace 12-Speed Cassette Silver 11-34T -Open Box
The uninterrupted shifting experience of the DURA-ACE R9200 12-speed cassette range lets you climb, sprint, and push your limits without stopping to think about your next gear change. Larger driving cogs maximize drivetrain efficiency and create compatibility with both SHIMANO 11 and 12-speed freehub bodies.