Buy Derailleurs Cheaply in the Bicycle Online Shop at starbike.com

The derailleur, alongside the front derailleur, is responsible for the selectable gear ratio of the gear shift. While the front derailleur ensures that the chain is positioned on one of the front chainrings, the rear derailleur guides the bicycle chain onto one of the up to 11 rear cogs.

The number of teeth on the chainrings and cogs determines the gear ratio, which is adapted to the requirements. For example, this allows for highly efficient pedaling on inclines or declines. Additionally, it is possible to shift under full load, which is often the case during climbs.

Typically, most standard gear shifts have between 21 and 30 gears. In reality, however, it is almost never possible to use all available gears, as certain combinations of cogs and chainrings can lead to significant chain misalignment, which should be avoided. In this regard, the Rohloff Speedhub hub gear is worth mentioning, which offers the same gear range as conventional derailleur systems with only 14 gears.

In addition to derailleur systems, there are also hub gears, where the gear transmission technology is housed in the rear hub.

The most well-known manufacturer of derailleurs is the Japanese company Shimano. This is followed by the American company SRAM and the Italian traditional company Campagnolo.

While Shimano and SRAM offer derailleurs for mountain bikes and road bikes, Campagnolo focuses exclusively on the design and development of road bike components.

Derailleur systems with derailleurs, front derailleurs, etc., are known for their solid gear progression and gear range; however, due to their "open" design, they are also relatively sensitive to external influences (dirt, grime, water). This means that, compared to hub gears, the derailleur needs to be maintained and serviced more frequently.

Our Bike Parts Online Shop offers a wide variety of bicycle derailleurs. From hobby use to lightweight derailleurs, we have the right one for you!

If you are unsure about choosing the right derailleur, feel free to contact us.