freehub

English

Etymology

free +‎ hub, from a trademark.

Noun

freehub (plural freehubs)

Shimano freehub
  1. A type of bicycle hub incorporating a ratcheting mechanism, with a cassette, or set of sprockets, mounted onto a splined shaft of the hub to engage the chain.
    In many high-end and midrange bicycles, freehubs have replaced freewheel systems.

See also
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