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Badass Box 4 for Panasonic

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by Badass
Product information "badassBox 4 Panasonic"
Attention, only the normal sensor (right) is compatible with this variant -
for the new sensor (middle) you need the badassBox 4 Panasonic 2020 , for the Panasonic pen-shaped sensor (left) you need the badassBox 4 Panasonic CS set.

Badass eBikes proudly presents: the brand new badassBox 4 Panasonic

The badassBox 4 is the result of more than a year of development work. We completely redesigned the case, with patented snap lock and unique shape. With the new snap lock, you can open and close the badassBox with just one hand in no time at all.

We use a single 1.5V AAA battery. You can get replacements for the supplied battery cheaply and literally on every corner. You can carry out the replacement yourself on site in a very short time without the use of tools. We recommend replacing the battery at least once a year at the start of the season. Thanks to our specially developed and patented field enhancement technology FEET (Field Enhancement & Elimination Technology), you can go a long way with one battery. To protect against moisture and mechanical stress on the wheel, the electronics are glued into the housing with a special sealing compound and completely sealed.

We develop and manufacture the badassBox completely ourselves. Before and after casting, we check each individual badassBox to ensure it is working correctly. Customer satisfaction and quality are our top priority. We are happy to answer any question – usually on the same working day. Because of the high quality and our focus on customer satisfaction, we also offer a 1-month money-back guarantee.

Short & crisp

The badassBox is attached to the speed sensor of the e-bike and removes the 25 km/h limit. The e-bike is sold again in the untuned and therefore legal condition.

  • Contactless e-bike tuning
  • Unique design protected housing
  • Patented snap lock
  • Patented Field Enhancement Technology
  • Potting compound from the automotive industry
  • Double quality control
  • Made in Germany
  • 1 month money back guarantee


You can find the speed sensor on the chainstay of your bike (see picture). The badassBox 4 Panasonic is mounted via the Panasonic speed sensor next to the rear wheel. When the snap lock engages, the badassBox is securely attached to the sensor.

During initial assembly, the supplied spoke magnet must be installed instead of the original magnet. Our spoke magnet works in the same way as the original magnet without the badassBox, but is necessary for the function with our patented field reinforcement when the badassBox is attached. After placing the badassBox on the sensor, the spoke magnet must be moved to the edge of the housing in the direction of the snap lock.

After removing the badassBox, the spoke magnet must be put back into its original position.


The badassBox transmits a modified signal without contact, without an electrical connection to the motor, without interfering with the motor electronics or software, in order to exceed the speed limit. It is not necessary to laboriously open the motor. There is no risk of damage. The badassBox can be put on and taken off again in seconds, putting the e-bike back into its previous, legal state.

With all the advantages, an incorrect speed and values ​​derived from it are displayed as a matter of principle. We recommend the use of GPS-related additional devices (mobile phone, bicycle computer, etc.) for more precise driving data recording.

Technical specifications

Dimensions 61x31x28mm
Weight badassBox 22 g
with battery 32 g
battery 1.5V AAA battery (IEC R03)