condition: new make / manufacturer: Shimano model name / number: CS-M770
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This is the Shimano Deore XT 9-Speed Cassette. Sometimes you find something that just works and you stick with it. That is why 9-speed groups may not go away for a long time. Shimano's XT level 9-speed is a rock solid offering for riders who still insist that more isn't necessarily better. Available gearing is 11-34.
Aluminum carrier reduces weight and increases rigidity