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The uninterrupted shifting experience of the ULTEGRA R8100 12-speed cassette range lets you climb, sprint, or cruise without stopping to think about your next gear change.
PRODUCT SPECIFICATIONS
MODEL NO CS-R8100-12 SERIES ULTEGRA R8100 Series Average weight 291 (11-30T) 345 (11-34T) Combination 11-12-13-14-15-16-17-19-21-24-27-30T | 11-12-13-14-15-17-19-21-24-27-30-34T FEATURES