Rider-tuned means Dura-Ace works the way you want it. The new R9100 11-speed cassettes are available in a range of sizes including a wide-range 11-30 option – one cassette to use all year round. Smooth, fast shifting guaranteed.
• CFRP & Alloy spider arm, 5 titanium sprockets
• 11-speed, Rider-tuned gear combinations 11-25T/11-28T/11-30T/12-25T/12-28T
• 3 Year Manufacture Warranty
• Lightweight – 175 grams (11-25 combination)