A man is riding his eBike along a road through a lush green forest.

The Performance Line Speed is depicted on a white background.

Max. torque

100

600

Max. motor power

100

340

Max. support

0.8

2.9

Rounded weight

Arrive at your destination faster with powerful support and maximum efficiency.

Open overlay

Thanks to its sensors, the Performance Line Speed reacts precisely and can therefore be controlled more directly.

Open overlay

Cropped image of Performance Line Speed.

Auto mode automatically adjusts the support offered on climbs or during sudden headwinds.

Compact construction

The compact dimensions of the Performance Line Speed and its magnesium housing reduce the weight of the drive unit to just 2.9 kilograms. This allows you to control your eBike more comfortably.

Walk assistance and hill start assist

Thanks to walk assistance, you can push your eBike more easily up steep sections. With hill start assist, you can set off more easily – without unintentionally rolling backwards. For a more relaxed journey to work.

Limit mode

Ride more comfortably and reduce battery consumption – in Limit mode, your Speed Pedelec supports you up to 25 km/h. Ideal for more range and for group rides without constant braking.

Discover Limit mode

Our digital features act as a deterrent and protect your eBike against theft. Make use of the free eBike Lock additional theft protection or the eBike Alarm and Battery Lock premium services that are included in the Flow+ subscription.¹

Protecting your eBike

Looking over the shoulder of a person holding a smartphone and activating the eBike Lock and eBike Alarm functions in the eBike Flow app.

An even more detailed map view for your display provides improved orientation and more precise navigation.²

View of a smartphone showing the battery level being set for when the goal is reached via the eBike Flow app.

Customise your riding modes from within the eBike Flow app. Set the level of support, dynamics, speed and torque. Choose your four favourite modes – for a perfectly tuned riding experience.

Close-up of a handlebar with Kiox 500 and a smartphone, where you can customize the riding modes.

After your ride, the eBike Flow app shows you how much CO₂ you have saved compared to travelling the same distance by car.³

Looking over the shoulder of a person viewing their route in the eBike Flow app.

Keep an eye on the current charge level of your battery in the eBike Flow app at all times and check when it is fully charged from your sofa – for even more convenience during route planning.²

A woman in an orange top sits cross-legged on a gray sofa and looks at her smartphone. In the background, you can see a plant.

Updates ensure that your eBike is always up to date and gets even better. You can simply download new eBike functions and transfer them to your eBike via Bluetooth.

Over-the-shoulder view of a person holding a smartphone with the eBike Flow app open.

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Bosch eBike battery (PowerTube 540) with gray print.

PowerTube 800

The PowerTube is perfectly integrated into the frame, creating an elegant, clean eBike look.

About the product

Kiox 500

Kiox 500 is extra-large, intelligent and robust – making it the ideal display for your next tour, including navigation function and notification tones.

About the product

Bosch eBike ABS

The Bosch eBike ABS helps you to brake more effectively and safely – whether you are in the city, on dirt bike paths or on trails.

About the product

ConnectModule

BCM3100

The basis for digital theft protection: permanently installed on the eBike, it ensures that your eBike is protected online and digitally.

About the product

Technical data
	Performance Line Speed (BDU378Y)³
eBike system	The smart system
Shifting system type	Derailleur system, hub gear system
Max. support (%)	340 %
Maximum possible drive torque	85 Nm
Start-up behaviour	Fast, Sporty
Max. supported speed	45 km/h
Backpedal brake	x
Walk assist with Hill Hold	j
Hill start assist with Hill Hold	j
Gear shift detection	Hub gear system: no Derailleur system: yes
Weight, approx.	2.9 kg
Rated continuous output	250 W
Maximum power	600 W
Max. power at a cadence of 70 rpm	600 W
Max. power-to-weight ratio, approx.	207 W/kg

¹Maximum 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.

³Maximum 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 for gear shift detection: eShift hubs

⁴Maximum 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.

Performance Line Speed

BDU378Y | Mid-drive motor

Getting there fast: With the Performance Line Speed, S-pedelecs can reach speeds of up to 45 km/h.

The smart system
Max. 85 Nm
Max. 600 W
Max. 340%

Current product

Performance Line Speed

BDU388Y | Mid-drive motor

More powerful support to get there faster: The perfect system for commuters.

The smart system
Max. 100 Nm
Max. 750 W
Max. 400%

About the product

Performance Line Speed

BDU490P | Mid-drive motor

Fast and dynamic.

Bosch eBike system 2
Max. 85 Nm
Max. 600 W
Max. 340%

About the product

All drive units

The Flow+ subscription is subject to a charge. When using Flow+, the General Terms and Conditions (GTC) apply.
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To make use of this feature, you'll need a paid Flow+ subscription. When using Flow+, the General Terms and Conditions (GTC) apply.
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The emissions saved relate to the use phase. The calculation is based on the Federal Environment Agency’s assumptions (2022): Car = 166 g CO₂/pkm, eBike = 3 g CO₂/pkm
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