Product Info
CASSETTE SPROCKET, CS-R9100, DURA-ACE, 11-SPEED
Gear combination: 11-25T, 11-28T, 11-30T (New gear combination), 12-25T, 12-28T|Closer gear combination: 11-25T/12-25T|CFRP & Alloy spider arm, 5 titanium sprockets|Wider gear combination: 11-28T/12-28T/11-30T (new gear combination)|Rider tuned gearing|Lightweight
