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Installing Hub Duo Anti Rotation Brackets

Biktrix Help CenterOwnerMaintenance & FixesInstallation, Removal & Replacement

Introduction

Follow these steps for instructions on installing the Anti-Rotation brackets on the rear Axle of your Hub Duo.

You will need the following tools to do this:

  • 4mm Allen Key

  • 19mm Flat Wrench OR an Adjustable Wrench

  • Anti Rotation Brackets (x2)

  • M5x15 Bolts (included with brackets)

Step 1

Start with the bike either securely resting on its kickstand OR if on a bike stand support the rear wheel with a stool or similar surface!

  • Loosen and remove the circled bolt attaching the rear fender stay to the bike using a 4mm Allen Key. Take the washer and save it for later.

  • Remove the cap covering the axle nut as shown in the second image

  • Loosen and remove the now uncovered rear axle nut using a 19mm wrench. There will be a washer behind it - uninstall that as well. If your bike has a derailleur guard also remove it from the bike while doing this.

    • You can alternatively use an adjustable wrench if you do not have a 19mm Wrench.

    • Ensure the rear wheel is fully on the ground or that it's weight is supported while doing this.

Step 2

  • Install the anti-rotation bracket so the large hole is on the axle threading and the small hole lines up with the hole on the frame that the fender stay attaches to.

    • This is demonstrated in the second image

  • Reattach the fender stay with the previous washer and the included longer M5x15 bolt. Only thread this bolt in halfway through for right now.

Step 3

  • Reattach the washer and large axle bolt using the 19mm Wrench or Adjustable Wrench.

    • If your bike has a derailleur guard you can also reinstall it at this time - slide it on before the washer and axle nut.

  • Thread the axle nut back onto the axle - first lightly by hand then tighten with your wrench.

  • Now fully tighten the fender stay bolt.

  • Fully tighten the Axle Nut with your wrench. If you have a torque wrench this should be torqued to 40 Nm.

  • Reinstall the axle nut cap.

Now that this has been done on one side you can return to Step 1 and perform this process on the other side of the bike. Once one bracket has been installed on both sides of the motor axle you will be finished!