Badass Box 4 for Pendix

TYPE: Pendix

VENDOR: Badass Box

154,00 €

Payment & Shipment
Customer reviews

Attention, the new Pendix sensor (second picture) is not compatible!

Badass Box 4 for Pendix e-bike drives

Ride without limits and finally enjoy the full potential of your e-bike - this tuning tool makes it possible! The optimised version of the Badass Box is now also available in a version especially for e-bikes with Pendix mid-mounted motors (Pendix is a system with which normal bikes can be upgraded to motorised e-bikes).

The Badass Box 4 completely removes the 25 km/h speed limit of your Pendix motor. The tuning can be switched on or off at any time. All you have to do is plug or unplug the box and move the spoke magnet a little. With the optimised Badass Box 4, this is now quicker and easier than ever before, thanks to the slimmer housing and a patented snap lock.

This tuning tool is battery-powered and has a range of around 7,000 km or 1 year (due to battery discharge). This is made possible by the use of a powerful AAA battery and the specially developed, patented field enhancement technology "FEET" ("Field Enhancement & Elimination Technology"). Of course, the battery can be replaced at any time, without any tools. Suitable replacement batteries can be found inexpensively almost everywhere.

Since the electronics of the Badass Box 4 are glued and sealed into the housing with a special potting compound from the automotive industry, they are very well protected against moisture and mechanical stress.

The Badass Box 4 was developed and manufactured in Germany - a real quality product "Made in Germany". Every single box is tested for correct function before and after encapsulation.

How it works

As soon as the Badass Box 4 is plugged in, it transmits a modified signal without contact, i.e. without interfering with the motor electronics or software (the Pendix drive cannot be damaged in the process). This effectively tricks the system so that the 25 km/h speed limit is removed.

Due to this special mode of operation, the speedometer of the e-bike no longer shows the correct speed when tuning is active (= box attached). This also applies to values derived from the speed. We recommend the use of GPS-based additional devices to display the correct speed (e.g. smartphones or bicycle computers).

Compared to the previous versions, the Badass Box 4 for Pendix has a whole range of improvements:

-Completely redesigned, significantly slimmer housing, so that installation situations that are too tight are finally a thing of the past.

-The O-ring of the previous version has been replaced by a patented snap lock that allows the box to be plugged in and unplugged even faster.

-Longer range than ever before (up to 7,000 km), as the previous CR2 battery has been replaced by a much more powerful AAA battery.

-From now on, an additional optional fastening security by means of cable ties at the snap lock is possible.


The installation of this tuning tool is simple and can also be done by yourself. With the Badass Box 4, it is not necessary to open the motor housing for installation.

Simply mount the box over the Pendix speed sensor next to the rear wheel (you will find the speed sensor on the chain stay of your bike). When the snap lock engages, the box is securely attached to the sensor. If you wish, you can additionally secure the tool with cable ties.

Tip: When mounting the sensor for the first time, you should replace the screw of the spoke magnet with the lug screw included in the delivery. Once this has been done, you can easily move the spoke magnet in the future without additional tools.

After placing the Badass Box 4 on the speed sensor, the spoke magnet must be moved towards the edge of the housing in the direction of the snap lock. Now the e-bike is tuned and the 25 km/h speed limit of the Pendix motor has been removed.

To undo the tuning, simply remove the Badass Box and move the spoke magnet back to its original position. The e-bike is then back in its original state.

Scope of delivery

-Badass Box 4 for Pendix
-AAA battery
-Thumb screw

Badass Box 4 for Pendix - Technical data

-Dimensions: 61 x 43 x 15 mm
-Weight: 27g (with battery 37g)
-Battery: 1.5V AAA battery (IEC R03)

Badass Box 4 for Pendix - Compatibility

This Badass Box 4 fits all Pendix e-bike mid-mounted motors with the former / previous sensor. You can find the compatible (previous) sensor in the illustration.

Important: The Badass Box 4 is not compatible with the new Pendix sensor (see illustration above).

Payment & Shipment

Delivery time, Shipping costs, Minimum order value und Payment methods:

Delivery time

Delivery time is 1-8 business days within Germany. Postal delivery time outside Germany may take longer.

Shipping area

We ship to Belgium, Bulgaria, Denmark, Estonia, Finland, Germany, Greece, Ireland, Iceland, Italy, Croatia, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Austria, Poland, Portugal, Romania, Sweden, Slovakia, Slovenia, Spain, Czech Republic, Hungary, Cyprus.

For shipping to Germany please use our german shop.

For a solution to Switzerland and Liechtenstein please see here.

We do not ship to the USA, France, Canada (including all overseas territories) and generally outside the EU.

Shipping costs

The shipping costs for Germany are 3,50 Euro. The shipping costs are waived from an order value of 180 Euro. For countries within the EU the shipping costs are 9,90 Euro. The shipping costs are waived from an order value of 300 Euro. We ask you to cover the cost of any return shipment yourself. Please note that customs fees may apply in third countries outside the European Union.

Minimum order value

The minimum order value is 25 Euro. Only from this amount you can use prepayment or PayPal and bank transfer as payment methods.

Maximum order value

The maximum order value for orders outside the EU is 1.000 Euro. The maximum order value within the EU is 12.500 Euro.

Payment in advance bank transfer

Please transfer the total amount with your order number to our account which you received in the confirmation email. Please note that bank transfers within Germany can take up to three working days. Transfers from abroad, especially from Austria and Switzerland, usually arrive very quickly. From other countries, transfers can take a little longer on average.

Payment in advance Paypal

At the end of the order process you will be redirected to the page of Paypal. There you can initiate your payment. As soon as the Paypal transaction is completed, the status of your order will change in the store. The goods will then be shipped as soon as possible.


Comparison of e-bike tuning products




Badass Box

RedPed / BluePed /






Sx2 Dongle


Software (Module)
Box Module Module Module Module (Kit)
Module /
Module /
Range of functions ***** ***** * ***** **** *** *** *** *** / ** *

Easy installation of the tuning

***** ***** **** ** ** ** ** ** / * ** / * *

Invisible after installation

***** ***** * ***** ***** ***** ***** ***** ***** / **** ****

Switching on / off while riding

Gerät, Display
App, Display
(App), Display
Display, Magnet
***** / ****
Display /
Dongle, (Licht)

No more tuning Module at the bike

***** ***** ***** * * * * * * / **** ****

Invisible dismantling

***** ***** ***** ***** ***** ***** ***** ***** ***** / *** ***

Easy dismantling

***** ***** ***** ** ** ** ** ** / * ** / * *

Correct display of km/h

* *****
Display, App
Display, App
* ****


***** ***** ***** ***** ***** ***** ***** ***** ***** *****


* ***** * ***** ***** ***** ***** * * *

Price range in euros

169 to
189 to 299 149 to 154 219 to
159 to 179 139 to
139 to
89 to
89 to
139 to


Customer reviews

Important: Tuning measures on e-bikes and e-scooters mean that they are no longer permitted for use on public roads. Legally permissible use is therefore only possible on private property or - if permitted - in competitions. Driving an e-bike or e-scooter modified by tuning measures on public roads can lead to criminal liability for driving without a license as well as driving without insurance coverage. Tuning measures on the e-bike and e-scooter can lead to a loss of warranty rights and manufacturer warranties. In addition, tuning measures can lead to a loss of insurance coverage and accident victim assistance benefits in the event of accidents. The e-bike (or e-scooter) modified by tuning measures is exposed to an additional load due to the higher speed, which can lead to safety risks.

Badass Box 4 for Pendix

Badass Box 4 for Pendix

154,00 €