Feb 11, 2021

Bike Terms Defined

A visual guide and glossary of bike anatomy

Bike Parts Glossary


 One of the rear sprockets that attaches to the hub on the rear wheel.


A group of stacked sprockets on the rear wheel of a bicycle with a rear derailleur.


A large cog carrying the chain on a bicycle, which is attached to the crank.


One of  a set of two on a bicycle that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn drives the rear wheel.


An axle around which a pedal rotates; threaded at one end to screw into crank arms.


An assembly of levers, usually cable actuated, that moves the chain between sprockets on a cassette or chainring assembly.


The aspect of a bicycle drivetrain that determines the relation between the cadence, the rate at which the rider pedals, and the rate at which the drive wheel turns.