Derailleurs play a significant role in the drivetrain of a bicycle by shifting the chain to lower or higher cogs. For riders who are racing, performing or just taking their riding seriously, only the best derailleurs will do. The Shimano co… read more
Without the rear derailleur in place on your bicycle, you'd be hard pressed, frankly, to shift gears any time soon. One of two derailleurs on a geared bicycle, the rear derailleur responds to a shift of the rear gear by moving the chain to… read more
The derailleur serves a crucial role in the shifting of your bicycle's gears. Responding to tension from the shifter cable, the derailleur moves the drive chain from one gear to another. If not properly adjusted, the derailleur will fail to… read more
Most geared bicycles will contain both front and rear gears, and for each set of gears there is a derailleur responsible for moving, or derailing, the chain from one gear to another. Shimano is one of the world's most renowned manufacturers… read more
A rear derailleur is a mechanism located just above the rear hub of a road or mountain bike and is part of the gear shifting system of the bike. The derailleur essentially moves the chain from one sprocket of the bike to another as determin… read more
Your derailleur (pronounced, and sometimes spelled, "derailer") is the focal point of your bike's shifting mechanism. Derailleurs need periodic adjustments to perform well, and learning to tweak your own can save you time, frustration and… read more
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