What are the differences between Bosch Ebike System 2 (BES2) and Bosch Ebike Smart System 3 (BES3)?


All the ins and outs about the new Bosch eBike Systems


Harmonic or power mode – but above all perfectly suited to you. The drive units on our cargo bikes, the Bosch eBike Systems (BES), offer a unique riding experience. We are very excited to tell you all about the 2023 model and the changes made to this new drive unit: BES3 versus BES2.

The 2023 model in our range of Urban Arrow Family bikes comes equipped with the new Bosch BES3 system. The introduction of mid-drive motors with this new Bosch Smart System offers improved cycling performance and more smart possibilities. The new system allows you to easily install firmware updates with your phone, enhances your performance thanks to the new functions on the smart display, and protects your bike against theft using the E-Bike Lock, to name just a few examples.

Here are some of the key differences compared to the previous generation Family bikes with the BES2 system:

General updates


More power
The battery capacity in the Bosch E-System 3 has been increased from 500 to 545 kWh on all Urban Arrow Family models (with the exception of the Active Line Plus).

The eBike Flow App
Connect with your bike using the eBike Flow App so you can store your favourite settings easily. This allows you to control all settings in the smart system, which connects the drive unit, the battery, the display and the control unit.

The eBike Lock
Included in the smart system offers added protection against theft, giving you more security. Lock your bike, by simply walking away. Your smartphone serves as a digital key which deactivates the motor. Using audio notification and display icons, the system tells you if the eBike Lock is active. Simple as that!

Hill Hold
The new Hill Hold feature complements the Walk Assist mode. When you walk uphill, this setting makes sure your bike can’t roll backwards.


The eBike Flow App

Self-managed updates and drive modes
In the new E-Bike Flow App you can adjust the drive modes on all connected smart system motors individually and according to your preferences. For example, you can determine the maximum torque and speed for each mode. So you have your riding experience entirely into your own hands. Furthermore, the app also enables wireless updates on the drive unit, sent via Bluetooth. So you are always guaranteed the latest features and software.

Changes for each Family-model

Active Line Plus

Our entry-level model, the Active Line Plus, remains unchanged and will not be equipped with the BES3 system. The Active Line Plus still comes with the BES2 motor and Purion display. This allows you to enjoy a fully electric premium cargo bike at entry-level prices. Looking for added power, comprehensive displays or more cool features? Then go for one of our more advanced models, equipped with the BES3 system.


LED-Remote Display

A new option is to use the SmartphoneGrip on the display holder instead of your Kiox 300. This turns your smartphone into a large screen with advanced options.


Kiox 300 Display


Cargo Line & Anniversary

Like the Performance Plus, the Cargo Line comes equipped with both the LED Remote and Kiosk 300 display. The Cargo Line also features the new Smart System Cargo Line motor which, in addition to all the new features in the Flow App, also includes the new Cargo mode. This mode offers you maximum assistance, with up to 400% of your own pedalling power, making it easier to drive away with heavy loads.

As always, the Cargo Line features the high-power Magura CMe disc brakes.

The Family Performance Line Essential, Black and the Performance Line Plus in White and Black are already being delivered with the new BES3 system.