SpeedBox 3.0 for Bosch E-Bike Motors
The SpeedBox 3.0 is a third-generation tuning chip for compatible Bosch e-bike motors.
It removes the standard 25 km/h assistance restriction and allows you to set a custom maximum assistance speed. Unlike many basic tuning chips, the bike’s display continues to show actual riding information, including speed, distance, average speed and range.
This version does not include Bluetooth and is not compatible with the SpeedBox app.
Key Features
Adjustable Assistance Limit
The SpeedBox 3.0 allows you to choose your preferred maximum motor-assistance speed.
The selected limit is stored automatically after five seconds of inactivity.
Actual Values on the Display
The e-bike display continues to show actual riding data, including:
Current speed
Maximum speed
Average speed
Daily distance
Remaining range
Easy Activation
The tuning can be activated or deactivated through:
The WALK assist function
The – + – + button sequence on bikes without a WALK button
Unlimited Maximum Setting
The maximum assistance speed can be set according to your preference, subject to the capabilities of the e-bike and riding conditions.
Compatible Bosch Motors
The SpeedBox 3.0 is compatible with selected Bosch e-bike motors, including:
Bosch Active Line Plus
Bosch Performance Line
Bosch Performance Line CX
Bosch Performance Line Speed
Bosch Cargo Line
It is suitable for compatible second-, third- and fourth-generation Bosch systems using the older Bosch connector system.
Compatible Displays
Bosch Kiox
Bosch Intuvia
Bosch Nyon
Bosch Purion
Bosch COBI
Not Compatible With
Bosch Smart System motors
Bosch Kiox 300
Bosch Kiox 500
Bosch Intuvia 100
Bosch Purion 200
Bosch LED Remote
Bosch System Controller
SpeedBox Connect
SpeedBox smartphone app features
Bosch Smart System bikes require a SpeedBox model designed specifically for the Smart System.
Technical Specifications
Maximum assistance speed:
Adjustable, with an unrestricted maximum setting
Custom speed-limit setting:
Yes
Displayed riding information:
Actual values
Activation and deactivation:
WALK function or – + – + button sequence
Bluetooth:
No
SpeedBox app compatibility:
No
Minimum distance before activation on a new bike:
10 km
How to Activate the SpeedBox
Briefly activate the WALK assist function.
The display will show 9.9 km/h, confirming that tuning has been activated.
To return the bike to its standard 25 km/h assistance limit, briefly activate the WALK function again. The display will show 2.5 km/h, confirming that tuning has been deactivated.
On bikes without a WALK assist function, use the following button sequence:
– + – +
Use the same sequence to deactivate tuning.
Setting a Custom Assistance Limit
To enter the speed-setting mode, change assistance modes in the following sequence:
Turbo → eMTB → Tour → Eco → Tour → eMTB → Turbo
The currently selected speed limit will then appear on the display.
Each displayed value represents the selected assistance limit:
1.5 km/h displayed: 15 km/h limit
2.0 km/h displayed: 20 km/h limit
2.5 km/h displayed: 25 km/h limit
3.0 km/h displayed: 30 km/h limit
4.0 km/h displayed: 40 km/h limit
5.0 km/h displayed: 50 km/h limit
9.9 km/h displayed: 99 km/h setting
Change the selected limit by briefly activating the WALK function or rotating the rear wheel through one complete revolution.
The last displayed value is saved automatically after five seconds of inactivity.
Important Instructions for Fourth-Generation Bosch Motors
When using the SpeedBox 3.0 with a fourth-generation Bosch motor manufactured from approximately 2020 onwards, the bike must remain switched on after each ride until the distance recalculation has finished.
A countdown may appear on the display. Wait until the display reaches 0.0 km/h before switching off the e-bike.
To support reliable operation:
Leave the bike switched on until the countdown is complete.
During short stops, keep one foot resting on a pedal to help prevent the countdown from starting.
During longer stops, allow at least part of the countdown to finish.
After a long ride, allow the full countdown process to complete.
Do not disconnect the display during recalculation.
Installation
The SpeedBox connects directly to the motor using clearly identified connectors designed to simplify installation.
Detailed fitting instructions and installation videos are available. Removing the tuning chip is completed by reversing the installation process.
RideFaster can provide compatibility and installation guidance before purchase.
Installation on a New E-Bike
Before 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.
Software Update Warning
We strongly recommend that you do not update the Bosch motor or e-bike firmware while the SpeedBox is installed.
Software updates may:
Affect compatibility
Cause the tuning to stop operating correctly
Increase the risk of tuning detection
Cause faults not covered by the SpeedBox warranty
Disable automatic updates where possible.
Warranty Information
Installing or using a tuning product may affect the e-bike manufacturer’s warranty.
The SpeedBox product warranty may not cover faults caused by motor or system software updates.
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. Use is entirely at the rider’s own risk.
Always wear suitable protective equipment and ensure that the bicycle, brakes, tyres and other components are appropriate for the intended riding speed.