The derailleur is an important, albeit French, part of most modern bikes. This video features a professional mountain bike mechanic demonstrating the installation of a rear derailleur on a mountain bike. It is a short video, but detailed enough that any DIY bike mechanic should be able to do it themselves.
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Mountain Biking How to Install the Rear Derailleur on the derailleur hanger

By WonderHowTo
Jun 8, 2010 04:09 PM

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