Perfectly matched
Active Line Plus
BDU344Y
Smooth support
Always in the flow: Navigate through traffic effortlessly and dominate ascents.
Quiet on the road
The drive unit is almost silent. So you can enjoy the peace and quiet or the chirping of the birds.
Additional benefits
Lasting harmony
Built for lasting enjoyment, the Active Line Plus features a maintenance-free drive unit and a high-quality aluminum housing.¹ Its superior sealing and robust bearings make it a reliable companion in any weather.
Recycled material
During the development process, we take care to use materials as responsibly as possible. For example, we use around 40% recycled aluminum in the drive unit housing, which saves almost half of the CO₂ emissions.² We also use recycled plastic for some of the components in the drive unit.³
Easy city navigation. Relaxation in the country.
The ideal set-up
PowerTube 540
With about 540 watt hours, the new PowerTube 540 offers more range than the PowerTube 500 with the same weight – allowing longer rides in the city and beyond.
LED Remote
The intelligent control center gives you access to numerous eBike functions. Its placement on the handlebar and its ergonomic design make it easy to use.
NewIntuvia 200
The Intuvia 200 shows you all the essentials – clearly arranged and perfectly readable. It is very easy to use. With no need to take your hands off the handlebar.
NewConnectModule
BCM3101
The new ConnectModule keeps an eye on your eBike even where GPS trackers reach their limits – for precise tracking over the last few yards.
Technical data
Filter options
| Technical data | New |
|---|---|
| Active Line Plus (BDU344Y)¹⁴ | |
| eBike system | The smart system |
| Shifting system type | Derailleur system, hub gear system |
| Maximum support (%) | 340 % |
| Maximum possible drive torque | 60 Nm |
| Start-up behavior | harmonious, smooth |
| Max. supported speed | 20 mph |
| Backpedal braking | Derailleur system: no Hub gear system: optional |
| Walk assistance with Hill Hold | y |
| Hill start assist with Hill Hold | y |
| Gear shift detection | Hub gear system: no Derailleur system: yes |
| Weight, approx. | 6 lbs |
| Rated continuous output | 250 W |
| Maximum power | 600 W |
| Max. power at a cadence of 70 rpm | 366.5 W |
| Max. power-to-weight ratio, approx. | 222 W/lb |
¹ 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 power values can lead to increased wear and have a negative effect on the range. Actual power is marginally less than 750 W to ensure regulatory compliance.
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 regarding 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 customized using the eBike Flow app. It should be noted that higher power values can lead to increased wear and have a negative effect on the range. Actual power is marginally less than 750 W to ensure regulatory compliance.
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 regarding gear shift detection: eShift hubs
³ Maximum values: deviations possible, depending on the hub gear system and battery. The values can be set individually to a limited extent using the eBike Flow app. It should be noted that higher power values can lead to increased wear and have a negative effect on the range. Actual power is marginally less than 750 W to ensure regulatory compliance.
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 regarding gear shift detection: eShift hubs
⁴ 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 power values can lead to increased wear and have a negative effect on the range. Actual power is marginally less than 750 W to ensure regulatory compliance.
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 regarding gear shift detection: eShift hubs
⁵ Only available in New Zealand and the USA. Maximum values: deviations possible, depending on the hub gear system and battery. The max. support of 600% relates to speeds of up to 9.3 mph and can be increased in the Race, Turbo, eMTB+, Cargo and Auto riding modes. On delivery, the performance values of this drive unit can be lower. They can be increased and individually adjusted with the help of the eBike Flow app. It should be noted that higher performance values can lead to increased wear and can have a negative impact on the range.
The rider can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer or the dealer. A maximum of four riding modes, in addition to Off mode, can be activated. With the help of the individual riding modes, the modes can be configured according to the individual needs of the rider via the eBike Flow app. Exception regarding gear shift detection: eShift hubs
⁶ Maximum values: deviations possible, depending on hub gear system and battery. The maximum support of 600% relates to Speeds of up to 20 mph 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 rider can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer, or the 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 rider via the eBike Flow app. Exception gear shift detection: eShift hubs
⁷ 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 regarding gear shift detection: eShift hubs
⁸ Maximum values: deviations possible, depending on the hub gear system and battery. The values can be set individually to a limited extent using the eBike Flow app. 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 regarding gear shift detection: eShift hubs
⁹ Maximum values: deviations possible, depending on hub gear system and battery. The maximum support of 600% relates to Speeds of up to 20 mph 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 customized 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 rider can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer, or the 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 rider via the eBike Flow app. Exception gear shift detection: eShift hubs
¹⁰ Maximum values: deviations possible, depending on hub gear system and battery. The maximum support of 600% relates to speeds of up to 20 mph and can be increased in the Race, Turbo, eMTB+, Cargo, and Auto riding modes. The rider can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer, or the 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 rider via the eBike Flow app. Exception gear shift detection: eShift hubs
¹¹ Only available in New Zealand and the USA. 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 power 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 regarding gear shift detection: eShift hubs
¹² 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 power 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 regarding gear shift detection: eShift hubs
¹³ 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 with the derailleur system, but it is optional for the hub system.
Exception regarding gear shift detection: eShift hubs
¹⁴ 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 with the derailleur system, but it is optional for the hub system.
Exception regarding gear shift detection: eShift hubs
¹⁵ Only available in New Zealand and the USA. Maximum values: deviations possible, depending on the hub gear system and battery. The max. support of 600% relates to speeds of up to 9.3 mph 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 customized using the eBike Flow app. It should be noted that higher power values can lead to increased wear and have a negative effect on the range. Actual power is marginally less than 750 W to ensure regulatory compliance.
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 regarding gear shift detection: eShift hubs
¹⁶ The weight refers exclusively to the motor weight of the Hub Line – without control unit and cadence sensor. No support factor: The support is based on intelligent sensor fusion, which is why no support factor is specified. Maximum values: Deviation possible depending on battery. The rider can activate/deactivate the riding modes via the eBike Flow app, the bicycle manufacturer or the dealer. A maximum of four riding modes, in addition to Off mode, can be activated.
FAQs
The Active Line Plus (BDU344Y) is a drive unit from Bosch that delivers gentle and quiet, smooth support in everyday life and on excursions. It gives a maximum torque of 60 Nm and a support factor of up to 340%. With approx. Six lbs – around 1.1 lbs lighter than its predecessor – the latest generation combines powerful performance with compact design. It is also smaller and stronger than its predecessor, and adapts perfectly to you with its improved responsiveness.
The Active Line Plus (BDU344Y) is perfect for everyday trips and country excursions. It provides gently adjustable support that adapts smoothly to your riding style. The sensitive response of the drive unit makes it particularly suitable for city riding and spontaneous excursions, and it also dominates steep climbs.
The riding experience with the Active Line Plus (BDU344Y) is smooth and controlled. The drive unit responds precisely and sensitively to your riding behavior – the support starts immediately and ends as soon as you stop pedaling. This means you can easily ride in city traffic or take spontaneous excursions.
The new generation of the Active Line Plus (BDU344Y) weighs only around 6 lbs (around 1.1 lbs lighter than its predecessor) and has a 17% smaller volume. This is made possible by a new, two-stage gearbox that makes the drive unit more compact. In addition, the new generation adapts even more precisely to your riding behavior with its improved responsiveness.
The Active Line Plus (BDU344Y) is maintenance-free. The gearbox uses a special grease lubrication system that is designed to last for the entire service life of the drive unit – making refilling or replacing unnecessary. Its optimized sealing and bearing concepts make the Active Line Plus a reliable companion in every weather.
Active Line Plus
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The smart system
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The gear in our drive units is maintenance-free. We use a special grease lubrication that is designed for the drive unit’s entire service life. You will not need to refill or change it.
BackSavings compared to the use of conventional aluminium. These savings are partially attributable to the use of green electricity in the production of recycled aluminium. The calculation is based on supplier data. We have considered the effects of CO₂ as well as other greenhouse gases and climate-relevant substances, insofar as these are relevant to the analysis. For ease of reading, we use CO₂ synonymously with CO₂ equivalents.
BackThe grease guide plate, torque sensor housing and wire feeder are among the largest plastic parts in the drive unit. The grease guide plate and torque sensor housing are manufactured using more than 50% recycled material, while the wire feeder has a recycled content of approx. 35% (source: supplier data).
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