SpeedBox 1.2 for Shimano – +E-Tube Port
The SpeedBox 1.2 is a completely redesigned tuning chip for e-bikes fitted with compatible Shimano motors.
Featuring new hardware, firmware and an updated design, it removes the standard 25 km/h assistance limit and allows the motor to continue providing assistance beyond the factory restriction.
This version does not include Bluetooth and is not compatible with the SpeedBox Connect app.
Which Version Do I Need?
The +E-Tube Port version is intended for e-bikes that do not have a spare E-Tube connection available on the motor.
This version is commonly required for bikes fitted with:
Shimano E5000 motors
Shimano Di2 electronic gear shifting
A Satellite System ON/OFF Switch
Shimano EW-SW100 or EW-SW300 switches
All e-bikes with a Shimano E5000 motor normally require the +E-Tube Port version.
If your motor already has a free E-Tube port, select the standard SpeedBox 1.2 version instead.
Key Features
Removes the 25 km/h Assistance Limit
When activated, the SpeedBox suppresses the factory speed limiter and allows the motor to continue assisting beyond 25 km/h.
Controlled Using the Light Button
The tuning can be controlled using the bike’s LIGHT function:
Lights off: tuning activated
Lights on: tuning deactivated
If you want the tuning to remain active regardless of the light setting, the SpeedBox fork terminal can be connected to the screw terminal marked “-”.
On bikes without an activated light function, the SpeedBox will remain permanently active.
Redesigned Hardware and Firmware
The SpeedBox 1.2 has been redesigned from the ground up with new internal hardware, firmware and construction for compatible Shimano e-bike systems.
Straightforward Installation
SpeedBox uses compatible original-style connectors to provide a secure and straightforward connection.
Detailed instructions and installation videos are available to guide you through both installation and removal.
Motor Compatibility
Compatible with:
Shimano Steps E8000
Shimano Steps E7000
Shimano Steps E6100
Shimano Steps E5000
Not Compatible With
SpeedBox Connect
Bluetooth features
SpeedBox mobile app functions
For Bluetooth connectivity and accurate riding data on your phone, choose the SpeedBox 1.2 B.Tuning for Shimano instead.
Technical Specifications
Maximum assistance speed:
Unlimited
Factory speed limiter:
Deactivated when tuning is active
Activation and deactivation:
Using the bike’s LIGHT function
Bluetooth:
No
SpeedBox Connect compatibility:
No
Minimum distance before installation on a new bike:
10 km
Speed Display Information
The e-bike display shows accurate speed values up to approximately 23 km/h.
Above 23 km/h, the display will no longer show the correct real-time speed.
For accurate speed and full riding data at higher speeds, select the Bluetooth-enabled SpeedBox 1.2 B.Tuning, which displays real-time information through the SpeedBox Connect app.
Installation on a New E-Bike
Before installing or activating the SpeedBox on a brand-new e-bike, ride the bike for at least 10 km.
This allows the motor and electronic system to complete their initial setup and calibration.
Important Software Information
We do not recommend updating the Shimano e-bike software while the SpeedBox is installed.
Automatic updates should be disabled where possible, as future manufacturer software changes may affect compatibility or operation.
Important Legal Notice
Installing this product may cause your e-bike to no longer meet the legal definition of an electrically assisted pedal cycle.
A modified e-bike must not be used on UK public roads, cycle paths or other public places unless it has been correctly registered, insured and approved for that use.
This product is intended for use on private land with the landowner’s permission, where legally permitted. The rider is responsible for complying with all applicable laws and regulations.