Precise and consistent HyperGlide shifting performance for 10-Speed
Stable gear changing performance over a wide range
HG sprockets deliver fast, quiet and smooth shifts
Cassette has 12-13-14-15-17-19-21-24-27-30T cogs
Tiagra has been completely reengineered and remastered with a more refined ergonomic design. Tiagra shares our top groups' engineering lineage offering greatly enhanced feel and sleek design backed by new levels of performance.