SpeedBox 1.2 B.Tuning for Bafang (3 pin connector)
Maximum speed: 50 km/h · Display shows: Real-time values up to 23 km/h, then real-time values only in the SpeedBox Connect app · 2 ways to activate / deactivate: The LIGHT button / the SpeedBox C
R6,200
Incl. 15% VAT
In stock — ships from Gauteng
Courier delivery in 1–3 business days to main centres.
10 min fitment
Removable
OEM plugs
This module allows assistance above 25 km/h. A bike modified this way is treated as a moped and may only be used on private land or closed circuits — never on public roads.
Product details
Get to know your SpeedBox
Product information from SpeedBox. Confirm compatibility before ordering.
Key features
SpeedBox 1.2 B.Tuning with integrated Bluetooth is a tuning chip for e-bikes with Bafang Max Drive M300 and M400 motors (with UART/CAN protocol). It removes the 25 km/h speed limit and, thanks to the SpeedBox Connect app, offers a unique connection between the e-bike and a smartphone.
Tuning control
Switching from the 25 km/h limit to 50 km/h and back
SpeedBox Connect
Connects the e-bike to a mobile phone via Bluetooth
Easy installation
Thanks to clear instructions including a video, anyone can handle the installation
Remote updates
You can update the SpeedBox to the latest version via the app
Compatibility
Bafang Max Drive motors: M300, M400 (with UART/CAN protocol)
Technical specifications
Remote updates
Bosch regularly releases new firmware versions for its motors, which may affect compatibility with our products or increase the risk of tuning detection. Therefore, we strongly recommend not performing these updates in order to ensure the continued full functionality of our products.
However, we continuously respond to these changes by updating our firmware. One of the biggest advantages of the B.Tuning version is the ability to update your SpeedBox directly via the SpeedBox App – without the need to purchase a new chip, even if you have already updated the system.
If we have tested and confirmed compatibility with the latest Bosch firmware and your chip includes the so-called Factory Bootloader (the icon is marked on the back of the chip), you can safely update your SpeedBox via the app.
Installation
Installing the device is easy and intuitive. Choose the option that suits you best — a video guide, a printed manual, or a detailed step-by-step picture guide.
Video guide
You can find a detailed installation and tuning activation procedure on our YouTube channel
Printed manual
Inside the product package you will find a printed manual including a wiring diagram for connecting the chip to the motor
Step by step
The illustrated guide will walk you through the installation step by step — from removing the motor cover to the test ride. Each step is accompanied by photos and a clear description.
Warning
• Rules for using derestricted e-bikes vary by country, so check local legislation before riding.
• SpeedBox is intended for off-road use only and you use it at your own risk.
• The manufacturer is not liable for damage caused by illegal or improper use.
• Installation may also void your e-bike warranty.
• For your safety, use appropriate protective gear and ride with maximum caution.
