RadExpand 5: testing and securing stem/handlebar components

serial number

Some RadExpand 5 ebikes within the following serial number ranges may require additional tightening to properly secure the stem faceplate bolts and the stem riser clamp bolt.

  • RE5I21E00004 through RE5L21E0825
  • RE5H21T0001 through RE5F21T0171

You can find your serial number at the bottom of your bike's headtube as shown in the illustration.

If you have a RadExpand ebike in one of these serial number ranges, please download and read the instructions in the PDF linked below, which you can follow (or share with a local, professional, reputable bike mechanic) to test and properly adjust your ebike. The instructions are part of the "RadExpand 5 Owner's Manual Update." We recommend downloading the update along with the latest version of your Owner's Manual.  

 WARNING

Improperly securing your handlebar, stem, or stem riser can result in loss of control of your bike, serious injury, or death. If you are not sure you have the experience, skills, and tools to correctly perform all steps to secure and verify the security of the handlebar, front wheel, and handlebar stem you MUST consult a professional, reputable bike mechanic to check your work and/or secure those components to the bike properly.

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