SpeedBox 1.3 B.Tuning for Bafang (4-pin connector) is a tuning module for electric bikes fitted with Bafang Max Drive M300, M400 and M420 motors with 4-pin connector. It removes the 25 km/h assistance limit, offering smooth assistance up to 50 km/h.
The module is activated manually via the LIGHT button on the control console. When the SpeedBox is activated, the headlight symbol is briefly displayed; simply press again to deactivate. Installation is simple, thanks to color-coded, solderless connectors.
Highlights
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Manual activation via LIGHT button.
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Simple installation: color-coded connectors, Plug & Play.
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Compatibility: Bafang Max Drive M300, M400 and M420 motors (4-pin connector).
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Correct display: actual speed up to 23 km/h.
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Reliability: robust module designed for intensive use.
Technical specifications
Specification |
Detail |
Type of use |
Tuning e-bike Bafang (off-road legal use) |
Engine compatibility |
Bafang Max Drive M300, M400, M420 with 4-pin connector |
Activation |
Manual via LIGHT button |
Max. speed setting |
Up to 50 km/h |
Display |
Actual speed up to 23 km/h, then fixed value |
Installation |
Plug & Play with color-coded connectors |
Recommendation |
Ride ~10 km before first activation on new bike |
Warnings |
Use on public roads may be illegal; may void warranty |