Rear derailleurs at cheap prices from starbike.com, your online bike shop
The rear derailleur is, besides the front derailleurs
responsible for the chosen gear ratio.
While the front derailleur ensure that the chain
is being positioned on one of the front chain rings, the rear derailleur moves the chain to
one of the up to 11 sprockets.
The tooth count of the chainrings and the sprockets
creates the gear ratio.
This makes it possible to keep the pedaling frequency at an efficient level.
Most common derailleur shifting systems have 21 to 30 gears, but in practice not all of
them can/should be shifted because the chain gets inclinated too much, which should be avoided.
Regarding this negative aspect of derailleur shifting system, the Rohloff Speedhub
gear hub should be mentioned,
which its only 14 gear achieves about the same gear range.
The most famous manufacturer of rear derailleurs is the japanese company Shimano
Other manufacturers are SRAM
and the italian company Campagnolo
While Shimano and SRAM produce rear derailleurs for mountainbikes
and road bikes, Campagnolo has focused itself on road derailleur systems.
The main disadvantage of rear derailleurs, especially in offroad usage, is their open design,
which makes them prone to mud and dirt. This results in more maintenance in comparison to gear hubs.
Our bike parts
shop offers a variety if different bicycle rear derailleurs.
From casual usage to lightweight rear derailleurs, we got what you're looking for.
If your unsure about the correct rear derailleur
choice, simply contact us.