The heart of eBikes
Drive units
The eBike motor, also referred to as the drive unit, gives you additional electrical support depending on your effort, speed and the selected riding mode.
Your eBike's motor
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| Technische Daten | New![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Active Line Plus (BDU344Y)¹ | Active Line Plus (BDU334Y)⁵ | Cargo Line (BDU384Y)⁹ | Cargo Line (BDU374Y)¹⁰ | Performance Line (BDU346Y)¹ | Performance Line (BDU336Y)¹ | Performance Line PX (BDU347Y)⁹ | Performance Line SX (BDU314Y)² | Performance Line CX (BDU384Y)⁹ | Performance Line CX (BDU374Y)¹⁰ | Performance Line CX-R (BDU386Y)⁶ | Performance Line CX Race Limited Edition (BDU376Y)¹⁰ | |
| eBike system | The smart system | The smart system | The smart system | The smart system | The smart system | The smart system | The smart system | The smart system | The smart system | The smart system | The smart system | The smart system |
| Shifting system type | Derailleur system, Hub gear system | Derailleur system, Hub gear system | Derailleur system, Hub gear system | Derailleur system, Hub gear system | Derailleur system, Hub gear system | Derailleur system, Hub gear system | Derailleur system, Hub gear system | Derailleur system, Hub gear system | Derailleur system, Hub gear system | Derailleur system, Hub gear system | Derailleur system, Hub gear system | Derailleur system, Hub gear system |
| Maximum support (%) | 340 % | 340 % | 600 % | 600 % | 340 % | 340 % | 600 % | 400 % | 600 % | 600 % | 600 % | 600 % |
| Maximum possible drive torque | 60 Nm | 50 Nm | 120 Nm | 85 Nm | 75 Nm | 75 Nm | 90 Nm | 60 Nm | 120 Nm | 85 Nm | 120 Nm | 85 Nm |
| Start-up behaviour | Harmonious, smooth | Harmonious, smooth | Controlled, powerful | Controlled, Powerful | Powerful, smooth | Powerful, smooth | Powerful, dynamic, controlled | Natural, sensitive | Direct, Powerful | Direct, Powerful | Direct, Very powerful | Direct, Very powerful |
| Max. supported speed | 25 km/h | 25 km/h | 25 km/h | 25 km/h | 25 km/h | 25 km/h | 25 km/h | 25 km/h | 25 km/h | 25 km/h | 25 km/h | 25 km/h |
| Backpedal brake | Hub gear system: Optional, No | Optional | No | x | j | Optional | j | x | x | x | No | x |
| Walk assist with Hill Hold | j | j | j | j | j | j | j | j | j | j | j | j |
| Hill start assist with Hill Hold | j | j | j | j | j | j | j | j | j | j | j | j |
| Gear shift detection | Hub gear system: no Derailleur system: yes | Hub gear system: no Derailleur system: yes | Hub gear system: no Derailleur system: yes | Derailleur system: yes, Hub gear system: no | Optional | Hub gear system: no, Derailleur system: yes | Optional | No | Hub gear system: no Derailleur system: yes | Hub gear system: no Derailleur system: yes | Hub gear system: no Derailleur system: yes | Hub gear system: no Derailleur system: yes |
| Weight, approx. | 2.7 kg | 3.2 kg | 2.8 kg | 2.9 kg | Approx. 2.8 kg | 3.2 kg | 2.9 kg | 2.0 kg | 2.8 kg | 2.9 kg | 2.7 kg | 2.7 kg |
| Rated continuous output | 250 W | 250 W | 250 W | 250 W | 250 W | 250 W | 250 W | 250 W | 250 W | 250 W | 250 W | 250 W |
| Maximum power | 600 W | 600 W | 750 W | 600 W | 600 W | 600 W | 700 W | 600 W | 750 W | 600 W | 750 W | 600 W |
| Max. power at a cadence of 70 rpm | 366,5 W | 370 W | 730 W | 600 W | 440 W | 550 W | 550 W | 400 W | 730 W | 600 W | 730 W | 600 W |
| Max. power-to-weight ratio, approx. | 222 W/kg | 188 W/kg | 268 W/kg | 207 W/kg | 214 W/kg | 188 W/kg | 240 W/kg | 300 W/kg | 268 W/kg | 207 W/kg | 277 W/kg | 218 W/kg |
¹ Maximum values: Deviations possible, depending on the hub gear system and battery. The eBiker can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer or the specialist dealer. A maximum of four riding modes, in addition to Off mode, can be activated. Using the custom riding modes, the modes can be configured according to the individual needs of the eBiker, via the eBike Flow app.
Exception gear shift detection: eShift hubs
² Maximum values: Deviations possible, depending on the hub gear system and battery. The performance values of this drive unit may be lower upon delivery. They can be increased and customised using the eBike Flow app. It should be noted that higher performance values can lead to increased wear and have a negative effect on the range.
The eBiker can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer or the specialist dealer. A maximum of four riding modes, in addition to Off mode, can be activated. Using the custom riding modes, the modes can be configured according to the individual needs of the eBiker, via the eBike Flow app.
Exception for gear shift detection: eShift hubs.
⁴ Maximum values: Deviations possible, depending on the hub gear system and battery. The eBiker can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer or the specialist dealer. A maximum of four riding modes, in addition to Off mode, can be activated. Using the custom riding modes, the modes can be configured according to the individual needs of the eBiker, via the eBike Flow app.
There is no backpedal function for the derailleur system, but it is optional for the hub gear system.
Exception for gear shift detection: eShift hubs
⁵ Maximum values: Deviations possible, depending on the hub gear system and battery. The eBiker can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer or the specialist dealer. A maximum of four riding modes, in addition to Off mode, can be activated. Using the individual riding modes, the modes can be configured according to the individual needs of the eBiker, via the eBike Flow app. There is no backpedal function for the derailleur system, but it is optional for the hub gear system.
Exception for gear shift detection: eShift hubs
⁶ Maximum values: Deviations possible, depending on the hub gear system and battery. The maximum support of 600% relates to speeds of up to 15 km/h and can be increased in the Race, Turbo, eMTB+, Cargo and Auto riding modes. The values can be set individually to a limited extent using the eBike Flow app. It should be noted that higher performance values can lead to increased wear and have a negative effect on the range.
The eBiker can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer or the specialist dealer. A maximum of four riding modes, in addition to Off mode, can be activated. Using the custom riding modes, the modes can be configured according to the individual needs of the eBiker, via the eBike Flow app.
Exception gear shift detection: eShift hubs
⁷ The various riding modes are activated/deactivated by the bicycle manufacturer and the specialist dealer. A maximum of four riding modes, in addition to Off mode, can be activated in the display. Using the individual riding modes, the modes can be configured according to the individual needs of the eBiker, via the eBike Flow app. It's not possible to customise your riding mode on S-pedelecs.
⁸ Maximum values: Deviations possible, depending on the hub gear system and battery. Activation/deactivation of the various riding modes is carried out by the bicycle manufacturer and the specialist dealer. A maximum of four riding modes, in addition to Off mode, can be activated in the display. Using the individual riding modes, the modes can be configured according to the individual needs of the eBiker, via the eBike Flow app. It's not possible to customise your riding mode on S-pedelecs.
⁹ Maximum values: Deviations possible, depending on the hub gear system and battery. The maximum support of 600% relates to speeds of up to 15 km/h and can be increased in the Race, Turbo, eMTB+, Cargo and Auto riding modes. The performance values of this drive unit may be lower upon delivery. They can be increased and customised using the eBike Flow app. It should be noted that higher performance values can lead to increased wear and have a negative effect on the range.
The eBiker can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer or the specialist dealer. A maximum of four riding modes, in addition to Off mode, can be activated. Using the custom riding modes, the modes can be configured according to the individual needs of the eBiker, via the eBike Flow app.
Exception for gear shift detection: eShift hubs.
¹⁰ Maximum values: Deviations possible, depending on the hub gear system and battery. The maximum support of 600% relates to speeds of up to 15 km/h and can be increased in the Race, Turbo, eMTB+, Cargo and Auto riding modes.
The eBiker can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer or the specialist dealer. A maximum of four riding modes, in addition to Off mode, can be activated. Using the custom riding modes, the modes can be configured according to the individual needs of the eBiker, via the eBike Flow app.
Exception for gear shift detection: eShift hubs
¹¹ The weight refers to the pure motor weight of the Hub Line – without control unit and cadence sensor. Support is based on intelligent sensor fusion, which is why maximum support is not specified as a percentage. Maximum values: Deviation possible depending on battery. The eBiker can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer or the specialist dealer. A maximum of four riding modes, in addition to Off mode, can be activated.




The usual Bosch quality
Our drive units are high-quality, powerful and lightweight. They provide efficient, quiet support for a natural riding experience. They are also reliable and robust – making them ideal for every ride.
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Higher performance values also mean higher wear and a lower range – we leave this individual decision to you. The eBike manufacturer can factory-set a limit on the maximum performance values. In the eBike Flow app, you can then only set the maximum values specified by the manufacturer.
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