There's an awful lot of jargon in the bike world which needs busting! If there's a term you don't understand, search for the definition below. And equally importantly, we need you to help. So, if you think there's a glaring omission from Bikepedia or you are just bursting with knowledge why not contribute and share it with everyone?
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The skeleton of a bike to which all the other components are attached. The frame is usually made of either aluminium, carbon, titanium or steel.
Frame number
The individual frame number affixed to the frame by the manufacturer that acts as its unique id code.
Gear cables
The cables that link your shifters to the gear mechanism. They should be regularly tested for appropriate tightness and general good condition.
Gears - Front Derailleur
The front gear mechanism which, by way of spring mechanism, pulls the chain onto the large chainring or allows it to move onto the smaller chainrings.

When the chain is on the larger chainring the force needed by the rider to move the pedals is greater than when the chain is on the smaller chainrings.
Gears - Rear Derailleur
The rear gear mechanism which, by way of spring mechanism, pulls the chain down onto the smaller sprocket or allows it to move up on to the larger sprockets.

This is one of the most vulnerable components on the bike and needs to be well protected when the bike is dismantled for for transport.
A sleeveless jacket that can pack down into a small enough size to fit into a jersey pocket. Gilets come in a variety of weights, are windproof and can be shower/rain proof.
Giro D’Italia
The three week stage race held in Italy in June. Considered to be the second biggest race in professional road cycling.
Gloves not only keep you warm in cold weather but can provide some dampening effect to the vibrations felt through the bike from the trail or road.
Gold Jersey
The leader’s jersey in the Vuelta d’Espana
Grand Tour
A three week stage race. The grand tours are the Giro d’Italia, the Tour de France and the Vuelta d’Espana.
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