The Performance Line CX (BDU384Y) shown isolated on a white background.

Experience adrenalin-fuelled, first-class trail fun with the Performance Line CX-R, our highest-quality drive unit. Developed with professionals, it stands for one thing above all else: pure power.

120

Max. torque¹

100

750

Max. motor power

140

600

Max. support factor²

0.9

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.³

Discover Trick Check

Performance upgrade 2.0

More power, more control – you decide. The next performance upgrade for the smart system is here. Get up to 120 newton meters of torque, 600% support, even more powerful propulsion, and ride faster for longer.¹ ² ⁴ ⁵ ⁶

Discover now

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.⁷ Allowing you to overcome obstacles such as steps, roots, or small rocks.

Discover now

A completely black eMountain bike set against a white background, illuminated from the top right.

The Performance Line CX drive unit-R displayed against a white background.

The housing of the Performance Line CX-R is made of magnesium.

The titanium crank spindle ensures light weight and high robustness.

Your input is measured up to a thousand times per second by two high-performance sensors.

Race Mode

Uncompromising support

The exclusive Race mode quickly takes you to top speed. As well as uncompromising support, you can expect maximum Extended Boost for your best times.

eMTB+-Modus

A closer look at the eBike handlebars featuring the Kiox 400C integrated into the top tube, with Race mode activated.

eMTB+ mode

The best of both worlds

eMTB+ mode combines the precise controllability of eMTB mode with the full power of Race mode and closes the gap between the two.

eMTB+ mode

Extended Boost

Kick becomes boost

Extended Boost gives you the decisive boost you need to overcome obstacles with ease.

Extended Boost

An eMountain biker rides steeply upward on a narrow path through a rugged, rocky landscape. In the background, a vast, dry canyon stretches out beneath a bright sky.

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A man rides his orange eMTB through a tall meadow.

Innovative solutions minimize noise so that you can fully focus on the trail.

Combine the Performance Line CX-R with eShift and sporty derailleur systems. You can then change gear more easily – and focus fully on the trail.

Close-up of an eMTB powered by the powerful Bosch Performance Line CX Race (CX-R) drive unit. The eBike stands on a fern-covered trail in the forest.

With Bosch eBike ABS and ABS Pro, you can brake with even greater performance and precision. What's more, you can view your braking data on your display or in the eBike Flow app.

The display Kiox 400C is integrated into the black frame of an eBike, with the illustration set against a white background. The display provides information on the ABS mode setting, the braking distance of the ABS in meters, and the number of ABS activations.

Keep a close eye on your pulse: You can connect your heart rate monitor or your Apple Watch to your eBike and track your heart rate on your display while you ride.

The display Kiox 400C, integrated into the black frame of an eBike, is shown in an illustration against a white background. The display provides information on power in watts, cadence in revolutions per minute, and heart rate in beats per minute.

When you set off, the eBike Flow app automatically records your riding data and automatically synchronises it with Apple Health, Strava or komoot if you so wish.

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

Use the eBike Flow app to fine-tune your individual riding modes or to record, analyse and share tricks, tour and fitness data.

A person sits on their black eBike, holding a smartphone in hand. In the background, a blurred sea, the horizon, rocks, and a meadow create a picturesque setting. The smartphone display shows the settings for the riding modes in the eBike Flow app.

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Uncompromising support and maximum Extended Boost for your best times – competitive and exclusive to our most powerful drive units.

This battery integrates perfectly into the frame, creating an elegant, clean look – in an especially lightweight housing.

Kiox 400C and Mini Remote are shown cropped.

The perfect display for the trail: protected and integrated into the frame, it always shows you exactly the information you need.

Bosch eBike ABS Pro shown in a separate image, leads to the ABS Pro page.

Trail-optimised braking: ABS Pro is designed for fast, sporty downhill riding and braking – ideal for professional eBike riders.

Technical data	New			New
	Hub Line (BDU306Y)¹¹	Active Line (BDU332Y)⁴	Active Line (BDU330)⁷	Active Line Plus (BDU344Y)¹	Active Line Plus (BDU334Y)⁵	Active Line Plus (BDU380)⁷	Cargo Line (BDU384Y)⁹	Cargo Line (BDU374Y)¹⁰	Cargo Line (BDU450 CX)⁷	Performance Line (BDU346Y)¹	Performance Line (BDU336Y)¹	Performance Line (BDU365)⁷	Performance Line PX (BDU347Y)⁹	Performance Line SX (BDU314Y)²	Performance Line CX (BDU384Y)⁹	Performance Line CX (BDU374Y)¹⁰	Performance Line CX (BDU480 CX)⁸	Performance Line CX‑R (BDU386Y)⁶	Performance Line CX Race Limited Edition (BDU376Y)¹⁰
eBike system	The smart system	The smart system	Bosch eBike system 2	The smart system	The smart system	Bosch eBike system 2	The smart system	The smart system	Bosch eBike system 2	The smart system	The smart system	Bosch eBike system 2	The smart system	The smart system	The smart system	The smart system	Bosch eBike system 2	The smart system	The smart system
Shifting system type	Derailleur 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	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
Max. support (%)	No	340 %	250 %	340 %	340 %	250 %	340 %	600 %	400 %	340 %	340 %	340 %	600 %	400 %	600 %	600 %	340 %	600 %	600 %
Maximum possible drive torque	45 Nm	40 Nm	40 Nm	60 Nm	50 Nm	50 Nm	120 Nm	85 Nm	85 Nm	75 Nm	75 Nm	65 Nm	90 Nm	60 Nm	120 Nm	85 Nm	85 Nm	120 Nm	85 Nm
Start-up behavior	fast, smooth	Harmonious, smooth	Harmonious	Harmonious, smooth	Harmonious, smooth	Harmonious and agile	controlled, powerful	Controlled, Powerful	Powerful	powerful, smooth	Powerful, calm	Dynamic, Sporty	powerful, dynamic, controlled	Natural, sensitive	Direct, Powerful	direct, Powerful	Very sporty	Direct, Very powerful	Direct, Very powerful
Max. supported speed	25 km/h	32 km/h	25 km/h	32 km/h	32 km/h	25 km/h	32 km/h	32 km/h	25 km/h	32 km/h	32 km/h	25 km/h	32 km/h	32 km/h	32 km/h	32 km/h	25 km/h	32 km/h	32 km/h
Backpedal brake	No	Optional	Derailleur system: no, Hub gear system: optional	Derailleur system: no, Hub gear system: optional	Optional	Derailleur system: no, Hub gear system: optional	No	x	x	j	Optional	Derailleur system: no, Hub gear system: optional	j	x	x	x	x	No	x
Walk assist with Hill Hold	j	j	j	j	j	x	j	j	x	j	j	x	j	j	j	j	x	j	j
Hill start assist with Hill Hold	x	j	j	j	j	x	j	j	x	j	j	x	j	j	j	j	x	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	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	Derailleur system: yes, Hub gear system: no	Derailleur system: yes, Hub gear system: no	Optional	Hub gear system: no, Derailleur system: yes	Hub gear system: no, Derailleur system: yes	Optional	No	Hub gear system: no Derailleur system: yes	Hub gear system: no Derailleur system: yes	Yes (dynamic)	Hub gear system: no Derailleur system: yes	Hub gear system: no Derailleur system: yes
Weight, approx.	2,3 kg	2,9 kg	2,9 kg	2,7 kg	3,2 kg	3,2 kg	2,8 kg	2,9 kg	2,9 kg	Approx. 2,8 kg	3,2 kg	3,2 kg	2,9 kg	2,0 kg	2,8 kg	2,9 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	250 W	250 W	250 W	250 W	250 W	250 W	250 W
Maximum power	400 W	586 W	290 W	600 W	600 W	415 W	750 W	600 W	600 W	600 W	600 W	600 W	700 W	600 W	750 W	600 W	600 W	750 W	600 W
Max. power at a cadence of 70 rpm	400 W	290 W	290 W	366,5 W	370 W	365 W	730 W	600 W	600 W	440 W	550 W	440 W	550 W	400 W	730 W	600 W	600 W	730 W	600 W
Max. power-to-weight ratio, approx.	174 W/kg	202 W/kg	100 W/kg	222 W/kg	188 W/kg	130 W/kg	268 W/kg	207 W/kg	207 W/kg	214 W/kg	188 W/kg	188 W/kg	240 W/kg	300 W/kg	268 W/kg	207 W/kg	207 W/kg	277 W/kg	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.

120 newton meters of maximum torque, deviations possible depending on shifting system. Higher performance values also mean higher wear and lower range – we leave this individual decision up to you. The eBike manufacturer can limit the maximum torque in the factory setting. In the eBike Flow app, you can then only set the maximum torque set by the manufacturer.
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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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Available in combination with DualBattery and the PowerTube 800, PowerTube 600, and PowerTube 750 eBike batteries for selected drive units of the smart system: Performance Line CX-R (BDU386Y), Performance Line CX (BDU384Y), Cargo Line (BDU384Y).
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Available in Europe only with the PowerTube 800 and PowerTube 600 eBike batteries and for selected drive units of the smart system: Performance Line CX-R (BDU386Y), Performance Line CX (BDU384Y), Cargo Line (BDU384Y).
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How long the maximum power of 750 watts is delivered depends on a number of factors, including cooling of the eBike components, the charge level of the battery, and the outside temperature.
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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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