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badassBox BOSCH Typ 4.0

Product no.: BA-04
badassBox BOSCH Typ 4.0
badassBox BOSCH Typ 4.0
Shipping time: 4-6 Days
149,00 EUR
19 % VAT incl.
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  • Products description
  • Reviews1
Products description

badassBox 4.0 Bosch

E-Bike tuning with the badassBox for pedelecs with Bosch motor

Our newest and best e-bike tuning for all Bosch mid-mounted drives  incl. 4th generation/2020. New streamlined casing with patented snap-lock fastening for even faster mounting and release. Even more robust thanks to a special casting compound from the automotive industry. New electronics for even greater range with a single AAA battery.

A quality product designed and manufactured by us in Germany.

Scope of delivery

badassBox 4 Bosch with AAA battery and Toolfree 4mm screw
Shipping by plane (outside EU) without a battery

Badass eBikes proudly presents: the new improved badassBox 4 Bosch

The badassBox 4 is the result of more than a year's development. We have completely re-designed the casing, made it more streamline and replaced the o-ring of the previous version with our patented snap-lock fastening. Making it more streamline makes it even easier to fit. The new snap-lock fastening means you can attach and remove your badassBox with just one hand in seconds. At customer's request, we have additionally added an optional securing feature on the snap lock using a cable tie.

The CR2 battery has been replaced with a AAA battery, so you can pick up replacement batteries much cheaper on just about any street corner. Tool-free battery change can be carried out quickly and easily while you're on the road – but should only be necessary once a year, or every 7000km. This was made possible by our in-house developed and patented field amplification technology FEET (Field Enhancement & Elimination Technology). To protect against moisture and mechanical stress, the electronics are glued into the casing and completely sealed with a special casting compound.

The badassBox is developed and manufactured exclusively by us in-house. Before and after casting we check each badassBox individually. Customer satisfaction and quality are our top priorities. If you have any questions, don't hesitate to ask – we'll get back to you with an answer straightaway, mostly on the same working day.

In a nutshell

The badassBox is attached to the speed sensor of the e-bike and overrides the 25km/h speed limit. Remove it and your e-bike is restored to its original state.

  • Contactless e-bike tuning
  • Streamlined, registered design for casing
  • Patented snap-lock fastening
  • Securing feature on the housing
  • Patented field enhancement technology
  • AAA battery for range in excess of 7,000km
  • Auto industry casting compound
  • Doubled quality control
  • Made in Germany


The badassBox 4 Bosch is fitted over the Bosch speed sensor next to the rear wheel. When the snap-lock clicks into position, the badassBox is fitted securely to the sensor.

 For extra secure fitting, the badassBox can also be fastened with a zip tie.

Once the badassBox has been fitted onto the sensor, the spoke magnet must be offset to the casing edge in the direction of the snap-lock clasp. If the spoke magnet touches the badassBox, it must be repositioned as near as possible next to the badassBox and turned through ninety degrees. It's now ready for use.

Following removal of the badassBox, the spoke magnet must be returned to its original position.

How it works

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.).

Technical data:

  • Length: 61 mm
  • Height: 43 mm
  • Width: 15 mm
  • Weight: 37 g incl. battery
  • 1.5V AAA battery (IEC R03)

Special feature: splash proof battery case, coated electronics. Also works under water.

After installation of the badassBox the magnet must be offset. The video shows this easy operation. ATTENTION: First time use, please exchange the Phillips screw of the magnet against the badassBox provided toolfree screw. Then the displacement of the magnet is possible without requiring any tools.


Installing the badassBox4 classically on the chain stay - Episode 1 - English

Here we show how to install the badassBox4 - classically, with the sensor on the chain stay. The easiest way to tune your e-bike.


This Product was added to our catalogue on 12/08/2017.
Customer reviews1
Average rating: 4
Based on 1 Review
Evaluation:| | Date: 13/03/2017
Does what it promises. Easy to mount and adjust. I can totally recommend it to anyone looking to break that 25k barrier. Makes biking that much more fun and allows me to get a couple of more rund in.
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badassBox BOSCH Typ 4.0
Shipping time: 4-6 Days
149,00 EUR
19 % VAT incl.
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