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The derailleur hanger is the part of the bike frame that connects the derailleur to the bike. This guide is an overview of how to replace the derailleur hanger on your bike.
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Be sure to select the correct hanger for your bike, as there is very little substitutability between brands and models.
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Find the correct hanger for your bike by contacting the manufacturer, or by using an online database such as derailleurhanger.com.
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Remove the wheel and set it to the side.
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Remember the fastener orientation on the hanger when removing it from the frame.
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Keep the fasteners if they are in good condition, as they are not always included with new replacement hangers.
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After installing the wheel, remember to clamp the wheel tightly in the frame. This secures the hanger in place.
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Check the hanger alignment with the DAG-3 Derailleur Hanger Alignment Gauge.
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If there is a lot of resistance when threading the derailleur back on, the threads might be worn down. It is then recommended to replace the threads on your derailleur.
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Double check the shifting performance of your bike, making sure it is functioning properly.
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The derailleur hanger should now be custom-fitted to your bike, allowing for smooth and functioning shifting.
The derailleur hanger should now be custom-fitted to your bike, allowing for smooth and functioning shifting.
