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Ultegra 12 speed cassette. Compatible with both 11 and 12 speed Shimano freehubs.
Cassette ratios:
11-12-13-14-15-16-17-19-21-24-27-30
11-12-13-14-15-17-19-21-24-27-30-34
Collections: Cassettes / Cogs Drivetrain Shimano
Category: 12 Speed