Shimano Dura-Ace CS-R9100 12-25T 11sp Cassette

Shimano's new rider-tuned lightweight titanium 11-speed cassette is fast, accurate and smooth shifting in all situations.. Rider tuned gearing
. Lightweight
. CFRP & Alloy spider arm
. 5 Titanium sprockets
. Gear combination: 11-25T
. New gear combination: 12-25T
. Series: DURA-ACE
. Weight: 175g