Badass Box 4 for Yamaha

TYPE: Yamaha Powerdrive

VENDOR: Badass Box

154,00 €149,00 €

You Save: 5,00 € (4%)

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Badass Box 4 for Yamaha e-bikes

Please note: The Badass Box 4 for Yamaha is only compatible with the sensor shown above, which is easily accessible on the chain stay.

If there is no sensor on the chain stay, the sensor is integrated in the dropout - then you need either the "Badass Box 4 Yamaha X-Set" or the "Badass Box 4 for Giant 2020", depending on the sensor.

The latest and so far best version of the Badass Box especially for e-bikes with Yamaha mid-engines. With this tuning tool, the 25 km/h limitation of the motor support can be completely removed in no time at all. If necessary, the e-bike can be returned to its original state at any time.

How it works

After the box has been installed and plugged in next to the speed sensor, it transmits a modified signal to the motor. This allows the preset speed limit to be exceeded. This means that (theoretically) unlimited speed values can be reached, with full motor support. The transmission of the modified signal is contactless and without electrical connection to the motor, so that damage to the drive is absolutely impossible.

Please note: As soon as the tuning has been activated (Badass Box plugged in), the e-bike display no longer shows the correct speed (this also applies to values derived from it). We therefore recommend using GPS-based additional devices to determine the real speed, which are usually more accurate anyway (e.g. smartphone, bike computer).

The most sophisticated Badass Box of all times

Compared to its predecessors, the new Badass Box 4 is equipped with various improvements that have optimised this tuning tool in many respects: The housing of the box is now significantly slimmer, so that there can no longer be any installation situations that are too tight. Thanks to a new, patented snap lock, the Badass Box can now be fitted and removed more quickly than ever before (the snap lock replaces the previously used O-ring). In addition - at the special request of the customer - an additional optional fastening device via cable ties has been provided on the snap lock.

There is also another significant improvement in terms of range: the previous CR2 battery has been replaced by a AAA battery which, thanks to the specially developed and patented FEET field enhancement & elimination technology, has a range of over 7,000 kilometres or 1 year (due to battery discharge). Of course, the battery can be changed easily at any time, without any tools. Appropriate AAA batteries can be bought on practically every corner.

In addition, the electronics of the box are glued and sealed into the housing with a special potting compound, so that the best possible protection against mechanical stress and moisture is guaranteed. By the way, every Badass Box is tested for correct functionality before and after potting as part of the manufacturing process.

BadassBox 4 for Yamaha- The most important info at a glance:

- 25 km/h speed limit is completely removed.
- Contactless e-bike tuning.
- Slim housing enables easy installation.
- Patented snap lock allows the box to be fitted and removed in a matter of seconds.
- Patented field amplification technology and new 1.5V AAA battery (IEC R03) provide over 7,000 kilometres of range.
- Potting compound from the automotive industry ensures robustness and protects against moisture.
- Double check during the manufacturing process.
- Dimensions: 61 x 39 x 15 mm
- Weight: Badass Box 27g (with battery 37g).
- Made in Germany.

Badass Box 4 for Yamaha - Compatibility

E-bikes with Yamaha mid-mounted motors: PW (Powerdrive), PW-X, PW-SE, PW-TE, PW-X2, PW-X3, PW-ST, Yamaha SyncDrive.

Attention: Not compatible with e-bikes of the Yamaha brand, e.g.:

Yamaha Moro 07
Yamaha CrossCore RC
Yamaha Wabash RT
Yamaha Booster / Booster Easy

Badass Box 4 for Yamaha - Installation

Since the Badass Box 4 for Yamaha does not require the engine to be opened, the installation of this tuning tool is simple. The Badass Box 4 must be fitted over the Yamaha speed sensor next to the rear wheel. Engage the snap lock so that the box is securely adjusted to the sensor. Optionally, you can also secure the box with a cable tie.

When mounting the box for the first time, replace the original magnet with the spoke magnet supplied. This spoke magnet works without the Badass Box in the same way as the original magnet, but it is necessary so that the patented field amplification technology can function properly with a Badass Box attached. After the Badass Box has been attached to the sensor, the spoke magnet must be moved towards the edge of the housing in the direction of the snap lock. When the spoke magnet touches the box, place it as close as possible to the Badass Box and turn it 90° - the tuning is activated and the 25 km/h speed limit has been lifted!

To deactivate the tuning, simply remove Badass Box 4 again. Then move the spoke magnet back to its original position and the e-bike is back in its original state (limitation of motor support to 25 km/h).

Replace the spoke magnet screw with a new one. 


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 Yamaha

Badass Box 4 for Yamaha

154,00 €149,00 €