Shimano Dura-Ace 10-Speed 12-27 Cassette, CS7900

• Hyperglide sprockets use specifically positioned shift ramps and tooth profiles for improved shifting
• Titanium sprockets receive a superior surface treatment to increase durability by approximately 30%
• Updated design on the cogs for better shifting performance for more robust shifting, and weight savings
• Super light weight rigid aluminum carrier
• Use with Super Narrow Chain for 10-speed
• 12,13,14,15,16,17,19,21,24,27
• 163 grams