3-spd fixed is well known and established. Has been so for many decades.
4-speed is over 70 years old, dérailleurs are over a hundred years old. Being long established is not a criterion for inclusion here.
@gbj_tester started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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4-speed is over 70 years old, dérailleurs are over a hundred years old. Being long established is not a criterion for inclusion here.