Max. torque

100

600

Max. motor power

100

600

Max. support¹

2.7

Rounded weight

Trick Check

Show everyone what you’ve got: Trick Check makes your skills measurable. Your tricks are recognised automatically and shown live on the display. 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 15 km/h via a free software update.¹

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Extended Boost

Extended Boost is now even better: Customise 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 sporty routes

The Hill Hold function prevents your eBike from rolling back unintentionally when pushing it up extremely steep slopes. When tackling tight bends, you can use Hill Hold to control the movement of your eMTB.

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

Easier hill starts

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

Customise your eMTB's riding modes to suit your training or racing requirements. Simply adjust the parameters via the eBike Flow app.

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

Set yourself new challenges, compete with others and receive exclusive content: Join the Bosch eBike Systems Strava Club 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'll get additional statistics and an annual overview.

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

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

Protecting your eBike

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

The eBike Flow app can be used as a digital garage: Here, you can add up to six eBikes to your account – and easily switch back and forth between them.

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

The PowerTube 625 is the perfect solution for your eMTB adventures and longer trekking tours.

About the product

PowerMore 250

Portable energy reserve: PowerMore 250 is the additional battery the size of a drinks bottle for even greater range and longer-lasting trail fun.

About the product

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

System Controller with Mini Remote

The System Controller is the minimalist control unit for eBikes with the smart system, and is fully integrated in the top tube.

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)⁷
eBike system	The smart system
Shifting system type	Derailleur system, hub gear system
Maximum support (%)	600 %
Maximum possible drive torque	85 Nm
Start-up behavior	direct, very powerful
Max. supported speed	32 km/h
Backpedal braking	x
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.	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

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.

¹⁷ Support up to 45 km/h for the Performance Line CX-R (BDU386Y), Performance Line CX (BDU384Y), and Cargo Line (BDU384Y) is exclusive to the New Zealand market. This higher speed requires explicit manufacturer approval for the respective eBike model. Please consult your local specialist dealer to check compatibility and availability for your eBike.

Up to 600% support only up to 15 km/h. 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 enabled as standard on the Kiox 300, Kiox 500 and Purion 200 displays and must be enabled 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 the Race, eMTB+ and eMTB riding modes, but cannot be customised: Performance Line CX-R (BDU386Y), Performance Line CX Race Limited Edition (BDU376Y), Performance Line CX (BDU384Y), Performance Line CX (BDU374Y), Performance Line SX (BDU314Y). Customisation is 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 (GTC) apply.
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