Badass Box 4 for Sachs

TYPE: Sachs

VENDOR: Badass Box

154,00 €149,00 €

You Save: 5,00 € (4%)

Payment & Shipment
Customer reviews

Badass Box 4 for Sachs

Sachs e-bike motors are considered to be extremely powerful power packs, but unfortunately the riding pleasure is diminished by the preset 25 km/h speed limit. This is where the Badass Box 4 for Sachs can help, because this ingenious tuning tool simply removes the annoying speed limit completely. The 25 km/h limit is now a thing of the past and you can finally enjoy the full power of your Sachs drive!

Contactless E-Bike Tuning

After attaching the box, it transmits a modified signal so that the 25 km/h speed limit is lifted. This happens contactless, without any intervention in the motor electronics or software. Since there is no electrical connection to the engine, it cannot be damaged unintentionally.

A great advantage of the Badass Box 4 is that you can restore the original state of the e-bike at any time and in just a few seconds: Simply pull off the box and move the spoke magnet to its original position - and the e-bike will have its original riding characteristics back and the motor assistance will end at 25 km/h again.

Important note: Due to the special function of the Badass Box 4, an incorrect speed will be shown on the e-bike display when tuning is active (this also applies to values derived from it).

Therefore, our tip: Simply use mobile, GPS-based additional devices such as bike computers or smartphones to display the correct speed.

For the best possible protection against mechanical stress and moisture, each Badass box is glued into the housing with a special potting compound and completely sealed. Each box is tested for correct functionality before and after potting. By the way, the potting compound comes from the automotive industry.

Made in Germany.

Advantages over previous versions

Compared to the previous versions, the Badass Box 4 has been optimised in many ways, which is why it is the best version of this tuning tool ever:

- The housing has been completely redesigned and made slimmer, so that there can no longer be any installation situations that are too tight (the sensor application is now only a minimum of 3 mm).

- The O-ring of the previous version has been replaced by a new, patented snap lock, so that the box is easier to put on and take off than ever before.

- At the customer's request, an optional cable tie fastener is now provided on the snap lock.

- The previous CR2 battery has been replaced by a more powerful AAA battery. This has a very long range and only needs to be replaced after more than 7000 km or once a year. You don't need any tools to change the battery, and suitable replacement batteries are available almost everywhere. The high range is made possible by the specially developed, patented FEET field enhancement & elimination technology.

Easy installation

The Badass Box 4 for Sachs is easy to install and can be removed just as quickly. Unlike some other e-bike tuning tools, the motor does not have to be opened to install the box.

You simply have to mount the Badass Box over the Sachs speed sensor next to the rear wheel. As soon as the snap lock engages, the box is securely attached to the sensor. If desired, you can additionally secure the Badass Box with a cable tie.

For initial installation, we recommend replacing the spoke magnet screw with the supplied lug screw. This allows you to move the magnet in the future without any tools. After placing the Badass Box on the sensor, the spoke magnet must be moved in the direction of the snap lock. When the spoke magnet touches the box, the magnet must be placed as close as possible to the box and turned by 90° - this completes the installation.

To undo the tuning, simply remove the box again and move the spoke magnet back to its original position - thanks to the lug screw, this can be done quickly and without tools. The e-bike is then back in its original condition.

Badass Box 4 for Sachs - 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 Sachs - Compatibility
Compatible with e-bikes with Sachs motors.

Scope of delivery

Badass Box 4 for Sachs
AAA battery
Lobe screw

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 Sachs

Badass Box 4 for Sachs

154,00 €149,00 €