Using a carbon fiber and alloy spider and five titanium sprockets, the DURA-ACE R9100 cassette provides accurate shifting and light weight to the most discerning road cyclists on the planet.
- CFRP & Alloy spider arm, 5 titanium sprockets
- Wider gear combination: 11-28T/11-30T (new gear combination)
- Rider tuned gearing
- Lightweight