SpeedBox 3.0 B.Tuning for Bafang M300 / M400 (3-pin plugs)

TYPE: Bafang

VENDOR: Speedbox

279,00 €

Payment & Shipment
Customer reviews

SpeedBox 3.0 B.Tuning for Bafang M300 / M400 (3-pin plug)

This tuning module does not only remove the 25 km/h speed limit of your Bafang e-bike, you can even set the maximum speed to an individually desired value.

In contrast to the "normal" SpeedBox, this "B.Tuning" version is also compatible with the practical SpeedBox app. The range of functions of the tuning is thus considerably extended so that you can really get the most out of your Bafang e-bike. Thanks to the app you will benefit from useful additional features (see below).

All important functions of the tuning module can also be used without the SpeedBox app (switching tuning on and off, etc.), so you don't have to take your smartphone with you every time you want to ride your bike.

By the way: Even when the tuning is switched on, the e-bike display continues to show correct data, such as the current speed.

Advantages of the SpeedBox 3.0 B.Tuning at a glance

-Removal of the 25 km/h speed limit.

-Compatible with the SpeedBox app.

-Maximum speed can be set individually: You can easily set the maximum supported speed via the SpeedBox app. Alternatively, you can also set the maximum speed manually: first switch the mode down three levels and then up three levels again. The display then shows the current speed limit. Now you can set the maximum speed by briefly pressing the LIGHT button or by turning the rear wheel 360°. After 5 seconds of inactivity, the last speed limit displayed is automatically saved.

-Correct speed in the e-bike display: Even when the tuning is activated, the e-bike display shows correct values (current speed, maximum and average speed, range, daily distance, etc.).

-Tuning can be switched on and off: The SpeedBox 3.1 can be conveniently activated / deactivated via the app, or via the control buttons on the e-bike display. To switch on the tuning, you can either press the LIGHT button or the button combination + - + -. The display will then briefly show 99 km/h - this signals that the tuning chip has been switched on and the speed limit has been lifted. Press the LIGHT button again to deactivate the tuning. A short display of 25 km/h then indicates that the tuning module has been switched off and the maximum supported speed ends at 25 km/h again. The e-bike then functions as if no SpeedBox chip was installed.

-The SpeedBox 3.0 Tuning Chip does not require its own battery.

SpeedBox App

This "B.Tuning" version of the SpeedBox 3.0 Tuning Module connects via Bluetooth to the specially developed SpeedBox App. This allows you to monitor your performance precisely. For example, you can display comprehensive riding parameters and data on your smartphone, save individual rides and compare them with friends, etc. The parameters displayed by the SpeedBox app are extremely accurate, as they are read directly from the control unit of the e-bike. But the app has a lot more to offer - see for yourself:

-Tuning control (activate / deactivate tuning).

-Set speed limit or maximum speed

-Display of various parameters, e.g. speed, distance, battery, range, power, energy, torque, etc.

-Save and display ride data

-Hide tuning (the tuning chip can then temporarily no longer be switched on via the bike's control buttons)

-Engine lock (temporarily switch off the engine)

-Engine diagnosis

Note: All relevant functions of the SpeedBox tuning module can also be controlled without the app (switch tuning on and off / set maximum speed etc.). However, the SpeedBox App is a very practical accessory that considerably expands the range of functions of the Tuning Chip.

Tip: Before ordering the SpeedBox 3.0 B.Tuning chip, download the SpeedBox App first. Test the demo version to get to know the functions of the app. This way you can also make sure that the app runs smoothly on your smartphone.


SpeedBox 3.0 B.Tuning is a chip or a module that has to be attached to the connectors at the engine. Thanks to the marked connectors, the installation is simple and can be done by yourself. You can use the illustration below as a guide for the installation.

If necessary, you can easily remove the SpeedBox chip again if you want to restore the original condition of your Bafang e-bike.

Important notes:

-If you install the SpeedBox 3.0 B.Tuning in a brand new Bafang e-bike, you must first ride the bike for at least 1 km before starting the tuning for the first time.

-If you want to update the software of your Bafang e-bike, you must first uninstall the SpeedBox 3.0 B.Tuning chip from the e-bike. Then update the software and install the SpeedBox again.

SpeedBox 3.0 B.Tuning for Bafang M300 / M400 (3-pin plug) - Compatibility

This tuning tool is compatible with the following e-bike drives (with 3-pole pins on the speed sensor):

-Bafang Max Drive M300

-Bafang Max Drive M400

Not compatible with Bafang Max Drive M420.

Not compatible with Bafang Max Drive M500.

Not compatible with displays with UART connectors.

SpeedBox 3.0, 3.1 and 3.2 (B.Tuning) modules for Bafang are compatible with motors using the CAN protocol, but not with motors using the UART protocol. The CAN or UART protocol can be distinguished by the shape of the connectors.

Compatible with the SpeedBox app (Bluetooth 4.0 or higher required).

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.

SpeedBox 3.0 B.Tuning for Bafang M300 / M400 (3-pin plugs)

SpeedBox 3.0 B.Tuning for Bafang M300 / M400 (3-pin plugs)

279,00 €