The new lightweight titanium 11-speed cassettes are available in various sprocket combinations, including the new 11-30T version. The drivetrain is perfectly balanced for improved performance. All components are part of an integrated system for optimum power transfer, including the vast array of gearing choices to perfectly match your riding style and needs. The Dura-Ace 9100 Cassette was repeatedly tested for maximum efficiency on all terrains, under all conditions. Fast, accurate and smooth shifting is guaranteed in all situations. Constructed with carbon, aluminum spider arm and titanium/steel sprockets.
Gear Ranges:11-speed: 11-25, 11-28, 11-30, 12-25 or 12-28T
Weight: 175 grams (11-25)