Dura-Ace R9100 11-Speed Cassette Ratio:11-30t Material: Crystal

Material: Crystal

838D gem-set skeleton hand-wound mechanical movement with small seconds at 10 o'clock

The contrasting color scheme adds a contemporary touch to any room

This package is available in four colors

Shave bike weight off without sacrificing durability or reliability

Dura-Ace R9100 11-Speed Cassette Ratio:11-30t Material: CrystalWith the inclusion of the new Shimano Dura Ace CS R9100 11sp Cassette, DuraAce expands gearing options further than ever. Features CFRP & Alloy spider arm, 5 titanium sprockets for lightweight performance. Specifications Expanded Rider Tuned gear combinations: 11 25T, 11 28T, 11 30T (New), 12 25T, 12 28T. Weight: 175g (11 25T), 193g (11 28T), 211g (11 30T), 189g (12 25T), 205g (12 28T).