Install a rear derailleur hanger

Tools Needed

2.5mm Allen Wrench

5mm Allen Wrench

15mm Wrench or Adjustable Wrench

Phillips Screwdriver

Flat Tip Screwdriver


This page will guide you on how to replace a bent or damaged derailleur hanger on your ZiZZO Bike.Because the derailleur protrudes from the frame of the bike, this part often gets damaged, either in shipping or through the normal course of riding. For this reason, ZiZZO Bikes are designed with a replaceable derailleur hanger.

Before we begin, it is recommended that you use a bike stand or other means to securely and safely hold the bike while you work in it.

1. Once you've secured your ZiZZO Bike, shift the bike into the "highest" gear. This is the "smallest" cog when looking at the cassette in the rear of the bike.

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2. Open the brakes by pinching the two brake arms together. Then lift the cable through the slot in the cable bridge.

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3. Remove the rear wheel. Using a 15mm wrench, loosen the axle nuts. Pull the derailleur back to allow the cogs to clear the derailleur and chain. Set the wheel aside for now.

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4. Remove the derailleur. Using a 5mm Allen wrench, remove the rear derailleur. Once removed, let the derailleur hang down from the bike. There is no need to completely disconnect the derailleur from the bike.

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5. Using a 5mm Allen wrench, remove the first of two fasteners holding the derailleur hanger. With a 2.5mm Allen Wrench, remove the second fastener (located on the opposite side of the first screw.)

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6. Replace the old/damaged hanger with a new one. Re-install the 2.5mm screw and the 5mm bolt that are used to hold the hanger onto the frame.

7. Using the 5mm Allen wrench, replace the derailleur. Be careful to not damage the softer Aluminum threads of the new hanger with the harder steel threads of the derailleur.

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8. Replace the wheel. Carefully align the chain so that it nests into the high gear. Lift the wheel so that the axle slides into the slot of the frame

8. Replace the brakes. Close the two brake arms so that the brake pads are pressing against the rim. Replace the "noodle" by sliding the cable through the slot of the cable bridge. Squeeze the brakes to test that they are working properly. See your Owner's Manual if you need to adjust the brakes.

Adjust shifting (if necessary). Refer to your Owner's Manual for instructions on how to adjust your shifting.

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Still need help? Feel free to contact us. 

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