The SpeedBox 3.1 tuning product allows you to freely set the speed limiter. After installing the tuning, the bicycle screen will present exact data such as maximum speed, average speed, distance traveled and kilometers remaining.

You can activate the SpeedBox 3.1 on the application or on the bicycle screen. After pressing the LIGHT or + - + - button, the value of 99 km per hour (62 mph) will briefly appear and from that moment you can go with unlimited speed.

You can turn off the tuning by pressing a press the LIGHT / + - + - button again. The value of 2.5 km per hour (1.6 mph) will appear on the screen and the 25km per hour limit will be activated again. The bicycle will work in the same way as before installing the product.

If the light button is missing, simply use the combination of the +-+- buttons and the SpeedBox will activate. SpeedBox is deactivated in the same way.

You can set the maximum speed of the electric assistance by changing the mode three levels down and then three levels up. After that, the current speed limit will appear on the screen. The maximum speed of the electric assistance can be changed by briefly pressing the LIGHT button, or by turning the rear wheel 360 degrees. The last limit displayed will be stored after five seconds of inactivity.

- Activation: LIGHT button
- Exact values on the display
- Compatible with Bafang M300 / M400 / M420 engines

Not compatible with:

- Bafang Max Drive M500
- SpeedBox App
- Display with UART connectors