EBike Speed Limit Remover SpeedBox 1.1 For Bafang (4 pin Connector)

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EBike Speed Limit Remover SpeedBox 1.1 For Bafang (4 pin Connector)

Basic tuning kit for e-bikes with Bafang motors.

SpeedBox 1.1 enables you to double the speed limit of an e-bike from the original 25 km/h to 50 km/h. When applied, the actual speed will be displayed in half values. The display also shows your trip and other aspects of your ride.

How does SpeedBox 1.1 work?

SpeedBox 1.1 tuning kit can be activated on the e-bike’s control unit. After pressing the LIGHT button, the active lights icon will be displayed shortly after which you will be able to ride at a speed of 50 km/h. The chip is deactivated by pressing the LIGHT button again.


When connecting the SpeedBox chip to an e-bike you will find connectors colored to make installation very simple. We have prepared detailed instructions and videos to make installation easy for you in the comfort of your home. Disassembly of our tuning chip is just as easy. If you have any troubles with the installation or disassembly, do not hesitate to contact us.

If you are planning to install SpeedBox on a brand-new bike, make sure you ride it for at least 1 km before the chip is activated.

Please note that the operation of this type of modified electric bikes on public roads may be against the law in some countries. The manufacturer takes no responsibility for damages resulting from the use SpeedBox products. Electric bikes equipped with SpeedBox products are not allowed to be used on public roads, cycling paths and public places. Electric bikes equipped with SpeedBox products can be used exclusively on private property and entirely at one’s own risk. The use of SpeedBox may void the warranty of your ebike.

We strongly recommend using other safety features and protective gear to prevent injuries.

  • Activation: by pressing the LIGHT button
  • Speed limiter: up to 50 km/h
  • Display shows: half values
  • Compatible with motors (from 2020 onwards):
  • Bafang Max Drive M300
  • Bafang Max Drive M400
  • Bafang Max Drive M420
  • Not compatible with:
  • 2016 - 2019 ebike models
  • Cortina ebikes
  • QWIC eBikes
  • SpeedBox App