The SpeedBox 3.0 B.Tuning is a third-generation tuning module with Bluetooth connectivity, built for e-bikes running Bosch mid-drive motors. It fits Active Line Plus, Performance Line, Performance Line CX, Performance Line Speed and Cargo Line units, including fourth-generation (Gen4) versions. The module removes the 25 km/h assistance cut-off and lets you set your own ceiling instead.
Pairing happens through the SpeedBox App, which links the bike directly to your phone. From there you control the tuning, adjust the speed limit, save rides and run motor diagnostics. The module also works with KIOX, INTUVIA, NYON, PURION and COBI displays. Please note that this chip is not compatible with the Bosch Smart System platform.
Once installed, your display keeps showing the real speed. Maximum speed, average speed and daily distance stay accurate as well. Because of that, your ride statistics remain correct rather than showing reduced values.
Key Benefits
- Bluetooth connectivity – links the e-bike straight to your phone through the SpeedBox App.
- Speed limiter removal – assistance continues at 40 km/h, 50 km/h or beyond 60 km/h.
- Adjustable speed cap – choose your own limit, for example 15, 20, 25, 30 or 99 km/h.
- True speed on the display – the speedometer never shows reduced figures.
- Tool-free activation – use the WALK assist function, the – + – + button sequence or the app.
- Invisible tuning – the app includes a function that hides the tuning.
- Motor lock and diagnostics – both features are managed inside the SpeedBox App.
- Colour-coded connectors – each plug has its own colour, so fitting stays straightforward.
Who Is This Module For?
This module suits e-bike owners running Bosch mid-drive motors. Compatible units include Active Line Plus, Performance Line, Performance Line CX, Performance Line Speed and Cargo Line. Gen4 versions produced in 2020 or later are supported too.
On the display side, the module works with KIOX, INTUVIA, NYON, PURION and COBI control units. It is also adapted for bikes without a classic control unit that still offer a WALK function. In that case, activation runs through the – + – + button sequence instead.
The product is intended for use on closed grounds and private property. Before ordering, confirm your bike does not run the Bosch Smart System platform, since the module is not compatible with it.
What’s in the Box?
- SpeedBox 3.0 B.Tuning module with colour-coded connectors
- Fitting instructions with video guides available online
Technical Specifications
| Model | SpeedBox 3.0 B.Tuning |
| Connectivity | Bluetooth |
| App | SpeedBox App |
| Compatible motors | Active Line Plus, Performance Line, Performance Line CX, Performance Line Speed, Cargo Line (incl. Gen4) |
| Not compatible with | Bosch Smart System |
| Compatible displays | KIOX, INTUVIA, NYON, PURION, COBI |
| Activation | WALK function, – + – + button sequence, SpeedBox App |
| Speed limiter removal | Yes |
| Speed capping | Yes, adjustable |
| True speed on speedometer | Yes |
| App functions | Tuning control, speed limit settings, ride saving, invisible tuning, motor lock, motor diagnostics |
| Activation indication on display | 9.9 km/h (6.2 mph) |
| Deactivation indication on display | 2.5 km/h (1.6 mph) |
How Does the SpeedBox 3.0 B.Tuning Work?
The module switches on directly from the bike display. Briefly press the WALK assist function. The value 9.9 km/h appears on screen, and from that moment assistance runs without the 25 km/h ceiling.
Switching off follows the same path. Trigger the WALK function again, and the display shows 2.5 km/h. The limit then returns to 25 km/h, so the bike behaves exactly as it did before fitting.
To set your maximum assisted speed, cycle through the modes in this order: Turbo – EMTB – Tour – Eco – Tour – EMTB – Turbo. The display then shows the actual limit you have selected.
Why Choose This Module?
Unlike simpler tuning chips, this third-generation unit keeps your ride data honest. Maximum speed, average speed and daily distance all stay accurate, so your statistics remain usable for training and maintenance planning.
The Bluetooth link adds control that button sequences alone cannot offer. Through the SpeedBox App you set precise limits, save rides, enable invisible tuning, lock the motor and run diagnostics. Meanwhile, the colour-coded connectors keep installation simple, since each plug matches only one socket.
Frequently Asked Questions
Which Bosch motors does the SpeedBox 3.0 B.Tuning fit?
- Active Line Plus, Performance Line and Performance Line CX
- Performance Line Speed and Cargo Line
- Gen4 versions from 2020 onwards
Does it work with my Bosch display?
- Yes, with KIOX, INTUVIA, NYON, PURION and COBI
- Also on bikes without a classic control unit that have a WALK function
- Activation there uses the – + – + button sequence
Is it compatible with Bosch Smart System?
- No, the module does not support that platform
- Check your motor generation before ordering
How fast can I go after fitting it?
- Assistance continues at 40 km/h, 50 km/h or over 60 km/h
- You can also cap it at 15, 20, 25, 30 or 99 km/h
Will my speedometer still show the correct speed?
- Yes, the display shows true speed
- Maximum speed, average speed and daily distance stay accurate
How do I turn the tuning on and off?
- Press WALK briefly; 9.9 km/h confirms activation
- Press WALK again; 2.5 km/h confirms deactivation
- The app handles both as well
Can I hide the tuning?
- Yes, the SpeedBox App includes an invisible tuning function
- Motor lock and diagnostics sit in the same app
Do I need tools to install it?
- No, the colour-coded connectors plug in by hand
- Written instructions and online video guides are included
The SpeedBox 3.0 B.Tuning gives Bosch riders full control over assistance, from a 99 km/h ceiling to a conservative 15 km/h cap. Because the display keeps reporting true speed and genuine trip data, nothing about your riding statistics changes. Remember that the product is intended for closed grounds and private property.
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