badassBox 4 for SHIMANO 2020


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€154,00 €155,00 Save €1

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Unlock the speed limit of your electric bike with a Shimano badassBox tuning box. The badassBox is the easier ebike tuning to install and remove. No wiring or engine cover removal required - just slide the badassBox over the speed sensor and you are ready to go! Unleash the full speed of your ebike engine and ride it like a derestricted e-bike should be!

Attention, the badassBox 4 Shimano 2020 is only compatible with your bike if it has the Shimano sensor SM-DUE11 integrated in the dropout (left picture).
-If the integrated sensor looks like the one on the right, it is the older SM-DUE10 from Shimano. Then you need the badassBox 4 Shimano X-Set 
-If the Shimano sensor SM-DUE10 (right picture) is mounted on your chainstay easily accessible, you only need a badassBox 4 Shimano 2019 .

Badass eBikes proudly presents: the new badassBox 4 Shimano 2020

The badassBox 4 is the result of over a year of development work. We have completely redesigned the housing, made it slimmer, which means that there are no longer any installation situations that are too tight.

The badassBox 4 runs on an AAA battery. You can get a replacement for the supplied battery cheaply and literally at every corner. You can carry out the replacement yourself on site without tools in a very short time. 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 very far with one battery. To protect against moisture and mechanical loads on the bike, the electronics are glued into the housing with a special potting compound and completely sealed.

We develop and manufacture the badassBox completely ourselves. Before and after casting, we check every single badassBox for correct function. 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.



The badassBox is attached to the chain stay of the e-bike together with the screwed-on speed sensor and removes the 25 km / h limit.

  • Contactless e-bike tuning
  • Slim, design-protected housing
  • Security option on the housing
  • Patented field enhancement technology
  • Potting compound from the automotive industry
  • Compatible with electronic circuits (Di2)
  • Double quality control
  • Made in Germany
  • 1 month money back guarantee




The integrated Shimano sensor is located in the area of the fork-end.
To access the sensor you will need to remove the rear wheel.
Find the position of the integrated sensor in the fork-end of your e-Bike and loosen the screws that secure the sensor.

Place the sensor in the recess provided on the badassBox.

Attach the sensor to the badassBox using the cylinder head screw provided (you will need a 2 mm Allen key for this). Now you can mount the badassBox together with the sensor by means of cable ties (included) to the chainstay mount.

For initial installation, the supplied spoke magnet must be mounted instead of the original magnet. Our spoke magnet works identically to the original magnet without badassBox, but with badassBox mounted, it is necessary for the function with our patented field amplification.

The spoke magnet must be aligned next to the badassBox. To check the position of the magnet on the bike when it is stationary, lift the rear of the bike, turn the rear wheel (not the cranks!) and let it run. Pay attention to the speedometer or App of your bike. The indicated speed should be steady and slowly drop off as the rear wheel rolls out.
If the spoke magnet touches the badassBox, the spoke magnet must be placed as close as possible to the badassBox and turned 90°. be rotated. Done!


The contactless and wireless badassBox transmits a modified signal in order to override the speed limit of your e-bike – without interfering with the motor's electronic circuitry or software. There's no need to open the motor and there is no risk of damaging it. The badassBox can be fitted in seconds – and just as quickly removed, restoring your e-bike to its former road-legal condition.

For all these advantages, a wrong speed, and values derived from it, are displayed. We recommend the use of GPS-related accessories for a more precise data acquisition of driving data (smartphone, bike computer, etc.)