Cassette

The rear cog cluster on a derailleur bicycle, which fits on a freehub. It consists only of cogs, with no ratcheting mechanism, as the ratcheting mechanism is in the freehub.

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v t e Cycling
Glossary Outlines Bicycles Cycling
General and technical	Bicycle Bicycle culture Bicycle dynamics Bicycle geometry Bicycle performance Electric bicycle History of the bicycle History of cycling infrastructure
Utility and slow recreation	Bicycle commuting Bicycle messenger Bicycle rental/hire Bicycle-sharing system Bicycle touring Challenge riding Cold-weather biking Freight bicycle Indoor cycling Rail trail Randonneuring Road cycling Utility bicycle Utility cycling Vehicular cycling
Sports-related cycling and fast-paced recreation	Artistic cycling BMX Cross-country cycling Cycle speedway Cycle sport Cyclo-cross Cyclosportive Fatbiking Freeride Goldsprint Mountain biking Downhill Trials Pump track Road bicycle racing Track cycling Triathlon
Health, safety and infrastructure	Active mobility Bicycle-friendly Bicycle law Bicycle parking Bicycle poverty reduction Bicycle rodeo Bicycle safety Bicycle transportation planning and engineering Bike rage Bike registry Bike-to-Work Day Bike Week (Bicycle Week) Cycling advocacy Cycling infrastructure Hand signals Idaho stop Lane splitting Protected intersection Vehicular cycling
Other	Unicycle Tricycle Quadracycle Pentacycle Bicycle collecting Bicycle cooperative ("bicycle kitchen") Clothing-optional bike ride Cooling vest Sustainable transport Mechanical doping
Lists	List of bicycle types List of bicycle brands and manufacturing companies List of bicycle-sharing systems List of cyclists List of films about bicycles and cycling List of doping cases in cycling
Category