Shimano Dura-Ace 7900 10-Speed Cassette. Shifting has been even further improved by creating an even more rigid (and lighter) aluminum carrier unit along with re-engineered teeth profile. Cassette design is lighter as Shimano has developed a super lightweight and rigid aluminum cassette sprocket carrier. The largest four cogs are titanium and weight is reduced by 10 grams. Weight: 163g (11-23)

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Available sizes: 11-21, 11-23, 11-25, 11-27, 11-28, 12-23, 12-25, 12-27


Manufacturer Part Number: cs-7900