TechnologyAugust 24, 2026

derailleurs

di-RAY-lerz

Definition

A mechanism on a bicycle that shifts gears by moving the chain from one sprocket to another.

Etymology

Derived from the French word 'dérailler', meaning 'to derail' or 'jump the rails'. It was adopted into English to describe the shifting mechanism on bicycles that moves the chain between different-sized cogs.

In the news

The article mentions that the new gravel bike frames feature UDH (Universal Derailleur Hanger) compatibility, which is a standard for attaching the derailleur to the frame.

Two sides of the gravel spectrum: Van Rysel drops the new RCR-G and EDR-G

Read the full article ↗

Escape Collective

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