Lighter, stiffer and with re-engineered tooth profiles, the Shimano Dura-Ace CS-7900 10-speed road bike cassette delivers fast and crisp shifting performance with a lighter aluminum carrier. Important!: The Shimano Dura-Ace CS-7900 Cassette is compatible with the Dura-Ace RD-7900 rear derailleur and the RD-7800 rear derailleur except for 11-27 and 11-28 . The RD-7800 rear derailleur does not have ample chain wrap capacity to handle the CS-7900 in 11-27 and 11-28. These cassettes must be used with the RD-7900.
- Speeds: 10
- Alloy sprocket carrier
- Gear combinations: 11-21 T, 11-23 T, 11-25 T, 11-27 T, 11-28 T, 12-25 T, 12-27 T
- Material: steel / titanium
- Chain compatibility: Super narrow HG for 10 speed.
- Weight: 163 g (11-23 T)
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