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Step-by-Step Guide to Installing a Pedal Assist Sensor on Your Electric Bike

Are you ready to upgrade your riding experience with a pedal assist sensor on your electric bike? This convenient addition will transform your pedaling effort into a seamless glide, making cycling more enjoyable and less exhausting. Here's the ultimate guide to installing a pedal assist sensor (PAS) on your electric bicycle.

What You Need:

  • Pedal assist sensor kit compatible with your e-bike

  • Basic toolkit (Allen wrenches, screwdriver, pliers, etc.)

  • Cable ties (optional for cable management)

Step 1: Prepare Your E-Bike

Ensure your electric bike is stable and switched off. Remove the battery to avoid any electrical hazards. Position your bike where you have easy access to the bottom bracket and pedals.

Step 2: Remove the Pedal and Crank

With the proper tools, remove the pedal nearest to the sensor’s intended location. Next, detach the crank arm. This step may require a crank puller depending on your bike model.

Step 3: Install the Pedal Assist Sensor

Attach the pedal assist sensor to the bike’s frame near the bottom bracket. Each PAS kit has a unique mounting method—some clip on, while others may need secure fastening with provided brackets or screws. Follow the specific instructions provided with your kit.

Step 4: Reattach the Crank and Pedal

Once the sensor is in place, reinstall the crank arm and pedal. Ensure these components are well-secured but do not overtighten, as this could damage the threads or sensor.

Step 5: Connect the Sensor

Run the sensor cable towards your e-bike’s controller, making sure it does not interfere with any moving parts. Use cable ties to tidy up the wiring. Connect the sensor plug to the appropriate port on your bike’s controller, matching the connector’s shape and pin configuration.

Step 6: Test the Installation

Before hitting the road, test the system. Reinstall the battery, turn on your e-bike, and spin the pedals with your hand. Verify that the sensor is correctly detecting the pedal movement and that the electric assist is engaging.

Step 7: Fine-Tuning

If your e-bike’s display has settings for pedal assist, check them to make sure they are configured correctly. You might need to adjust the sensitivity or assist levels to match your riding preferences.

Conduct a careful ride in a secure environment to ensure everything operates smoothly. Pay close attention to the new pedal assist function and confirm it reacts as expected during pedaling.

Safety Note:

When working on electrical components, it's paramount to prioritize safety. If you're not confident in your ability to perform the installation correctly, seek assistance from a professional bike mechanic.


With your pedal assist sensor now installed, you're ready to enjoy the benefits of an upgraded ride. Pedal assist can dramatically improve your cycling experience, making climbs easier and long rides more manageable. Enjoy your enhanced e-bike experience, and always remember to stay safe on the road.

Installing a pedal assist sensor does not have to be an intimidating task. By following these meticulous steps, even a novice cyclist can successfully equip their electric bike with this dynamic feature, unlocking a new level of cycling comfort and efficiency.

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