Unlock the speed limit of your electric bike with a Bosch SpeedBox tuning dongle kit. Unleash the full speed of your ebike engine and ride it like a derestricted e-bike should be!
NOTE: Conventional tuning modules offer only limited functionality compared to today’s e-bike standards. They often rely on complex and unintuitive display button sequences for activating, deactivating, or adjusting speed limits. This makes operation cumbersome, especially during a ride. In some cases, users must stop the bicycle and manually rotate the rear wheel multiple times to initiate or confirm the selected setting — a process that is inefficient and inconvenient for real-world riding conditions.
|
Feature |
❌ Conventional Tuning Chips |
✅ EPAspeed B.Tuning |
|
Setup & Activation |
Complicated button combinations, easy to forget |
Simple app control — activate or deactivate with a tap |
|
Speed Limit Adjustment |
Requires rotating the wheel or entering complex codes |
Instantly adjustable in the EPAspeed app |
|
Firmware Resistance |
Easily disabled after motor or display updates |
Fully resistant to OEM firmware updates |
|
Display Compatibility |
Often shows wrong speed or altered speed |
Preserves full speed and distance accuracy |
|
Installation |
Wired directly into display or motor — risk of detection |
Contactless design — no software interference |
|
Bluetooth Functionality |
Not available |
Built-in Bluetooth — control settings, monitor stats, set limits |
|
User Experience |
Outdated, difficult to use, and not intuitive |
Modern, seamless, and designed for real e-MTB riders |
|
Safety & Reliability |
Risk of error codes, firmware lockout, or damage during updates |
Engineered for long-term reliability with non-invasive integration |
In contrast, the EPAspeed B.Tuning series represents the next generation of e-bike tuning — fully app-controlled, firmware-resistant, and designed for effortless operation. With Bluetooth connectivity, intuitive controls, and invisible tuning functionality, EPAspeed delivers precision, reliability, and freedom unmatched by conventional solutions.
Key Features
• Tuning Control – Instantly activate or deactivate tuning
• Adjustable Speed Limits – Set your preferred maximum assistance speed
• Invisible Tuning Mode – Undetectable operation for smooth and safe performance
• Trip Recording – Automatically save and review detailed ride statistics
• Comprehensive Ride Data – Monitor distance, duration, average & max speed, and elevation
👉 Click here to view the EPAspeed 1.0 B.Tuning for Brose
PROPERTIES:
Activation: WALK function/ + - + -
Maximum speed: unlimited
Speed limit setting: YES
Display shows: actual values
Compatible with motors:
Brose SPECIALIZED (except for SL models)
Brose S-MAG
Brose S
Brose T
Not compatible with:
motors Brose S Mag FIT
SpeedBox App
WARNING: In case of updating the software of your e-bike, uninstall SpeedBox from the e-bike first, update the software and reinstall SpeedBox.
SpeedBox 3.0 tuning product enables to select speed limit of your own choice. After the product is installed, your e-bike’s display will show real data, such as maximum and average speeds, daily mileage and cruising range.
HOW DOES SPEEDBOX 3.0 WORK?
The tuning kit can be activated directly on your bike’s controller. By activating the WALK assist function shortly a value of 9.9 km/h (6.2 mph) is displayed and from now on you will be able to ride at a speed of 40 km/h, 50 km/h and even more than 60 km/h.
To deactivate the tuning kit, activate the WALK assist function shortly again. The value of 2.5 km/h (1.6 mph) will appear on your display and the speed limit will reset to 25 km/h. Your e-bike will then work the same as before installation of the tuning.
SpeedBox was also designed for e-bikes that do not have a classic control unit with WALK assist function. In this case you can just use the combination of + - + - buttons and SpeedBox will be activated. You can easily deactivate SpeedBox in the same way.
You can set the maximum speed of an electric assistance by switching modes three levels down and then three levels up: TURBO - TRAIL- ECO - OFF - ECO - TRAIL - TURBO. An actual speed limit will be displayed after that. The maximum speed of an electric assistance can be switched by activating WALK assist function shortly or by turning the rear wheel 360°. The value of 1,5 km/h on the display corresponds with the limit of 15 km/h, 2 km/h corresponds with the limit of 20 km/h, 2,5 corresponds with 25 km/h, 3,0 corresponds with 30 km/h, 9,9 corresponds with 99 km/h etc. The last displayed limit will be saved after 5 seconds of inactivity.
ASSEMBLY
When connecting the SpeedBox 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. Disassembly of our tuning product is just as easy. If you have any troubles with 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 product is activated.
