Max. torque

100

600

Max. motor power

100

600

Max. support¹

2.7

Rounded weight

Trick Check

Show what you can do: Trick Check makes your skills measurable. Your tricks are automatically recognized, shown live on the display, and your best performances are saved in the eBike Flow app.²

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Performance upgrade 2.0

The performance upgrade 2.0 enables maximum motor support of 600% up to 20 mph via a free software update.¹

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Extended Boost

Extended Boost is now even better: Customize the extra boost in the eBike Flow app and use it across all riding modes and other drive units.³ Allowing you to overcome obstacles such as steps, roots, or small rocks.

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The ideal drive unit for the toughest eMTB races – with riding modes that deliver pure dynamics.

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An [eMTB] rider speeds along a trail through the forest.

When every millisecond counts, powerful acceleration and high speeds make all the difference.

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Experience an impressive racing pedigree – thanks to its compact construction and low weight.

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Close-up of Performance Line CX Race on a red eBike.

An eMountain bike rider pushes his eBike up a dirt slope in the forest.

Hill Hold on tough routes

The Hill Hold function prevents your eBike from rolling back unintentionally when pushing it up extremely steep slopes. When tackling tight corners, you can use Hill Hold to move your eMTB in a controlled manner.

Close-up of an eMTB with Performance Line CX Race Limited Edition.

Easier hill starts

With hill start assist, you can start off confidently even on steep terrain: Put your foot on the pedal, press and hold down the minus button – and you'll be able to start off quickly, even when going uphill.

Customize the riding modes of your eMTB to suit your training or racing requirements. Simply adjust the parameters using the eBike Flow app.

Discover eBike Flow app

You sit on your eBike and set the power values using the eBike Flow app.

Set yourself new challenges, compete with others, and get access to exclusive content: Join the Strava club at Bosch eBike Systems and become part of a unique community.

You sit on your eBike and sync your values with Strava using the eBike Flow app.

The eBike Flow app records your ride data and provides you with valuable insights into your tour and fitness data. With a Flow+ subscription⁴, you get additional statistics and an annual overview.

Discover Flow+

Looking over the shoulder of a man checking his stats in the eBike Flow app.

eBike Lock is your additional theft protection, free of charge. Lock and unlock your eMTB automatically using your smartphone or display as a digital key.

Protect eBike

Screenshot of a smartphone with the eBike Flow App open, introducing the new feature eBike Lock.

The eBike Flow app is your digital eBike garage: You can add up to six eBikes to your account – and switch back and forth between them easily.

A person holds a smartphone displaying a list of their own eBikes in the eBike Flow app.

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The CompactTube 625 is shown on a white background.

PowerTube 625

With the PowerTube 625 you have found the perfect fit for your eMTB adventures and longer trekking tours.

About the product

PowerMore 250

Portable energy reserve: PowerMore 250 is an additional battery about the size of a water bottle for even more range.

About the product

Cropped illustration of a System Controller and a MiniRemote, displayed side by side.

System Controller with Mini Remote

Integrated into the top tube, the System Controller is the minimalist control unit for eBikes with the smart system.

About the product

ConnectModule

BCM3100

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

About the product

Technical data
	Performance Line CX Race Limited Edition (BDU376Y)¹⁰
eBike system	The smart system
Shifting system type	Derailleur system, hub gear system
Max. support (%)	600 %
Maximum possible drive torque	85 Nm
Start-up behavior	Direct, Very powerful
Max. supported speed	32 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.	2,7 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.	218 W/kg

¹Maximum values: Deviations possible, depending on hub gear system and 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. 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

² Maximum values: Deviations possible, depending on 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 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.

⁴Maximum values: Deviations possible, depending on hub gear system and 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. Using the custom riding modes, the modes can be configured according to the individual needs of the rider, via the eBike Flow app.
There is no backpedal function for the derailleur system, but it is optional for the hub gear system.
Exception gear shift detection: eShift hubs

⁵ Maximum values: Deviations possible, depending on hub gear system and 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. Using the individual riding modes, the modes can be configured according to the individual needs of the rider, via the eBike Flow app. There is no backpedal function for the derailleur system, but it is optional for the hub gear system.
Exception gear shift detection: eShift hubs

⁶ Maximum values: Deviations possible, depending on hub gear system and battery. The max. 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 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 The various riding modes are activated/deactivated by the bicycle manufacturer and the 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 rider, via the eBike Flow app. It's not possible to customise your riding mode on speed eBikes.

⁸ Maximum values: Deviations possible, depending on hub gear system and battery. Activation/deactivation of the various riding modes is carried out by the bicycle manufacturer and the 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 rider, via the eBike Flow app. It's not possible to customise your riding mode on speed eBikes.

⁹ Maximum values: Deviations possible, depending on hub gear system and battery. The max. 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 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 max. 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 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. The individual riding modes can be configured according to the individual needs of the eBike rider via the eBike Flow app.
Exception gear shift detection: eShift hubs

¹¹ The weight refers exclusively to the motor weight of the Hub Line – without control unit and cadence sensor. The support is based on intelligent sensor fusion, which is why no percentage figure is given for maximum support. 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.

Up to 600% support only up to 20 mph. Available in Race, Turbo, eMTB+, Cargo, and Auto riding modes. Details on the compatibility of your eBike can be found in the eBike Flow app.
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Trick Check works with the Performance Line CX (BDU384Y), Performance Line CX-R (BDU384Y), Performance Line CX Race (BDU374Y), Performance Line CX (BDU374Y) and Performance Line SX (BDU314Y) and on the following displays: Kiox 300, Kiox 400C, Kiox 500, Purion 200, Purion 400. Trick Check is not active by default on the Kiox 300, Kiox 500 and Purion 200 displays and must be activated manually under > "Settings > Display > Trick Check".
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Extended Boost is already available for the following drive units of the smart system in Race, eMTB+, and eMTB riding modes, but cannot be customized: Performance Line CX-R (BDU386Y), Performance Line CX Race Limited Edition (BDU376Y), Performance Line CX (BDU384Y), Performance Line CX (BDU374Y), Performance Line SX (BDU314Y). Customization will be available in every riding mode and for the following drive units of the smart system from mid-2026: Cargo Line (BDU384Y), Cargo Line (BDU374Y), Performance Line Sprint (BDU314Y). Extended Boost is not available in Limit mode.
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The Flow+ subscription is subject to a charge. When using Flow+, the General Terms and Conditions apply.
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