Bosch Performance Line CX Generation 5 - Smart System

Performance Upgrade 2.0 for Bosch Performance Line CX (BDU384Y)

The Bosch Performance Line CX (BDU384Y) represents a new level of riding dynamics and agility in the e-bike segment. It is designed to be powerful, light and quiet - with a clear focus on maximum uphill flow and a natural, controlled riding experience.

Even in its standard state, the drive unit delivers a balanced triad of performance, efficiency and range with 85 Nm torque, 600 watts of power and 340 % support. The system is complemented by a low weight of just 2.8 kg - around 100 g lighter than its predecessor - and therefore optimised for both sporty and efficient use.

Bosch is significantly expanding this performance level with the new Performance Upgrade 2.0. From May 2026, the performance of the Drive Unit can be individually increased: more power, higher torque and a significantly increased support factor are available - directly controllable via the Bosch eBike Flow app.

The free software update enables a noticeable increase in performance for compatible systems. The maximum assistance increases to up to 600%, while the peak power of up to 750 watts remains available over a longer period of time. In addition, the riding modes can be customised - precisely tailored to the area of use and riding style.

• Noticeably stronger acceleration and more direct propulsion
• Up to 600 % support factor for maximum performance
• Up to 120 Nm max. Torque
• Extended peak power availability (up to 750 W)
• Customised configuration of the riding modes via the eBike Flow app
• Fine-tuned balance between torque, power and efficiency

The upgrade is most effective in the lower speed range and ensures particularly powerful acceleration from a standing start. The legally prescribed assistance limit of 25 km/h remains unchanged.

With the upgrade, the Performance Line CX achieves a maximum torque of up to 120 Nm, a motor output of up to 750 watts and an assistance output of up to 600%. This further sharpens the sporty character of the platform without losing control or the natural riding feel.

Newly tuned sensors for finer power delivery

• The Performance Line CX reacts more sensitively to your input than ever before
• Bosch has reinterpreted and improved the signals from the sensors
• The cadence sensor measures how fast the cranks are turning
• The torque sensor measures how much force is exerted on the pedals
• Acceleration and position sensors recognise how the e-bike is moving

The Drive Unit does exactly what you want - sensitively, controlled and directly.

All the options. Your choice
The higher torque ensures stronger acceleration. The increased maximum power makes best times possible. The increased support quadruples your own power.

eMTB+ mode
With the built-in "Dynamic Control", you ride with full control, even if you have increased your performance values. In steep, bumpy riding situations, you have superior propulsion and on loose or wet surfaces it is like traction control.

eMTB mode and Extended Boost
The eMTB mode reacts progressively to you and recognises in a flash how much power you want based on your pedal pressure - dynamically, with maximum traction and always in control. With the integrated Extended Boost, all it takes is a targeted kick on the pedal and the Drive Unit pushes you effortlessly over steps and stones.

Push assist and hill start assist
With the push assist, you can easily push your eMTB, while the Drive Unit automatically adjusts the pushing speed to the gradient and surface. In addition, the hill start assist enables a controlled and high-traction start, even on steep terrain. Hill Hold is active in both cases: Your eMTB stays in place and does not roll back unexpectedly.

Bosch eBike ABS Pro
ABS Pro is ideal for professional eBikers: designed for fast, sporty downhill riding and braking. You can fully utilise your braking skills and still feel how the system increases performance.

eShift with TRP
You can decide whether you want eShift with TRP to shift gears automatically for you or whether you want to change gears yourself on varied terrain with fast manoeuvres - simply at the touch of a button. With eShift, gear changes are efficient and precise.

PowerMore 250
Compact and weighing just 1.5 kilograms, the range extender can be easily attached to the water bottle holder. It can be combined with all batteries in the smart system. Please find out in advance whether you can use the range extender for your eBike.

Customised riding modes
Your trail, your riding experience, your mode: With the help of four parameters, you can easily customise the riding modes to your needs using the slider in the eBike Flow app. Support, dynamics, maximum torque and maximum speed - you decide what you need.

Powder-coated. Robust right up to the tips

• The housing is made of magnesium - robust, corrosion-resistant and hard.
• The sealing concept prevents splash water from penetrating.
• Bosch was able to reduce the noise generated by the gearbox.
• The Performance Line CX motor is quiet. It strikes a balance between power delivery and noise development

eBike Flow app

The eBike Flow app is the centrepiece of our smart system and gives you a better, connected riding experience: safer, more individual and more convenient.

eBike Lock - free additional protection against theft

Ideal addition - park your eBike. Enjoy time out.
eBike Lock is free of charge for all eBikes with the smart system. When you switch on your eBike, it automatically checks whether your smartphone is nearby as a digital key. Only then is the motor assistance enabled and your eBike unlocked.

Display as a key - use your Kiox 300 or Kiox 500 as a key
It's as intuitive as it sounds: you remove the display from the bracket and stow it away. This quickly gives your eBike additional protection. Put the display back in and use it to activate the motor support to set off.

Unlocking via smartphone - unlock eBike manually via smartphone
Instead of unlocking your eBike automatically, you can also unlock it manually using your smartphone with a button on the home screen.

Battery Lock - digitally lock the battery

Additional protection - protect a valuable component of your eBike
With Battery Lock, you can also protect your eBike battery digitally: This function ensures that your battery can no longer be used if it is stolen.

Digital keys - Flexible with a digital key
You can use several digital keys at the same time for Battery Lock: your smartphone with the eBike Flow app and your Kiox 300 or Kiox 500.

Flow+ - Premium service with Flow+
Battery Lock is available as a premium service from Flow+. You can test Flow+ free of charge - for 12 months with the ConnectModule. Without the ConnectModule, you get one month free of charge.

Protect your eBike - eBike Alarm

Carefree parking - valuable location and status information
Whether you're only parking your eBike for a short time or away for a longer period of time, you can stay connected and relaxed via your smartphone.

Two-stage alarm - audible and visual alarm
Your eBike warns you with sound signals and illuminated LEDs if it detects movement or is moved. You will also receive a notification on your smartphone.

Tracking functions - helpful location tracking
If your eBike is moved a lot, you can use the tracking function to track its location.

eBike Pass - All data always to hand
The eBike passport allows you to keep track of important information about your eBike. Data about the eBike is stored here. You can add details manually - even independently of eBike Alarm.

Theft report - quick help in the event of theft
If your eBike is stolen, you can create a document with all the important information about the incident for the police, based on the data from the eBike Pass - and add a live tracking link.

Navigation - Exploring means experiencing

Route planning - plan according to your needs
Select the route profile and map details that suit your journey. Plan your own routes with intermediate destinations or import existing ones from komoot.

Display navigation - Navigate precisely with your display
The navigation function for Kiox 300, Kiox 400C and Kiox 500 takes you precisely to your destination - with turn-by-turn directions and clear route guidance. If you have subscribed to Flow+, you will receive even more map details on your display.

Ride Screen - turn your smartphone into an eBike display
You can use the Ride Screen with the SmartphoneGrip. It not only shows you all the important riding data, but also offers full navigation with 3D map display - even in portrait format.

Activity tracking - automatically record and analyse ride data
The eBike Flow app records your ride data as soon as you set off. The statistics provide you with valuable insights into your tour and fitness data - for analysing and sharing. If desired, all data can also be automatically synchronised with Apple Health.

koomot and Strava - Connect the eBike Flow app with your favourite apps
Transfer your routes from komoot to the eBike Flow app, synchronise your activities with Strava and share your successes with your friends or your community.

Personalise your eBike - as individual as you are

Display configuration
Configure your Kiox 300, Kiox 400C or Kiox 500 display according to your needs. Create new screens with your favourite information. Choose from over 30 display options and organise them as you wish.

Individual riding modes - tune and customise
Support, dynamics, maximum torque and maximum speed - you decide what you need. You can also put together your favourite riding modes. Choose from all the riding modes available for your eBike.

Performance Upgrade 2.0- Performance redefined
Unleash more power for your eBike. The Performance Upgrade 2.0 not only provides better acceleration, but also stronger support. Software optimisations give you more powerful propulsion and make you faster for longer - with even more precise control. Maximum torque of up to 120 Nm per update. Deviations are possible depending on the type of shifting. Higher performance values can lead to increased wear and lower range. The eBike manufacturer can limit the maximum torque at the factory. Therefore, only the maximum value approved by the manufacturer can be set in the eBike Flow app.

Available for:

• Performance Line CX-R (BDU386Y)
• Performance Line CX (BDU384Y)
• Cargo Line (BDU384Y)

Performance values supplied as standard:

• Performance Line CX-R: 100 Nm / 750 W / 400 % support
• Performance Line CX: 85 Nm / 600 W / 340 % support
• Cargo Line: 85 Nm / 600 W / 400 % support

The factory settings ensure a good balance between performance, riding enjoyment, range and wear.

Up to 600 % assistance up to 15 km/h.
Available in Race, Turbo, eMTB+, Cargo and Auto riding modes for selected drive units of the smart system.

Compatible drive units:

• Performance Line CX-R (BDU386Y)
• Performance Line CX Race Limited Edition (BDU376Y)
• Performance Line CX (BDU384Y / BDU374Y)
• Cargo Line (BDU384Y / BDU374Y)
• Performance Line PX (BDU347Y)

Only in the USA and New Zealand:

• Performance Line Speed (BDU388Y)
• Performance Line Sport (BDU347Y)

Details on compatibility can be found in the eBike Flow app.

The drive units are supplied with a maximum of 340 % or 400 % support as standard - depending on the respective model. These settings offer a balanced relationship between performance, riding enjoyment, range and wear.

Display configuration
Configure your Kiox 300, Kiox 400C or Kiox 500 display according to your needs. Create new screens with your favourite information. Choose from over 30 display options and organise them as you wish.

Extended Boost - Precise push. More momentum
A targeted push on the pedal is all it takes to give your eBike that decisive boost. With the Extended Boost, you can overcome obstacles such as steps or stones. Customise the extra boost in the eBike Flow app.

Further functions

Over-the-air updates
Updates keep your eBike up to date and even improve it. You can easily download new eBike functions and transfer them to your eBike via Bluetooth.

One account. Multiple eBikes
The eBike Flow app becomes your digital garage: you can add up to six eBikes to your account - and easily switch between them.

Digital service book
Your Bosch eBike dealer can synchronise the data of your service appointments with the eBike Flow app. Simply tap on "My eBike" in the app settings and you will find a record of what was done when your eBike was serviced.

CO₂ savings
After your ride, find out how many CO₂ emissions you have saved compared to a car journey.

Trick Check - More skills. More fun.
Improve your skills and analyse your performance: Trick Check automatically recognises and records the type of tricks you perform, whether jumps, stoppies, manuals or wheelies. To help you improve your riding technique, you receive direct feedback on the display and via an acoustic signal. During the ride, you can see the distance, duration, height or angle on your display for eight seconds. After the ride, you can find your best values in the eBike Flow app. The function is active as standard on your Kiox 400C and Purion 400. For all other displays, you can activate it at any time in the display settings and switch the signal tone on and off. The sensor system is set so that it only reacts to clear tricks.

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.

Features - Bosch Kiox 400C (BRC3200)

• Colour screen size: Diagonal approx. 2.0" / 5.1 cm
• Maximum typical brightness: 1,000 cd/m² with brightness control
• Power supply: eBike battery / internal battery
• Charging option for external devices via USB-C®
• Dynamic screen display without manual screen switching
• Warning tones for navigation
• Display configuration with 30 customisation options via the eBike Flow app
• Expandable with Mini Remote for more convenient operation

Product features

• Size (H x W x D): 45 x 86 x 20 mm
• Display: 2.0 inch display (5.1 cm)
• Compatibility: Bosch The smart system
• Weight: 57 g

More details

Protected in the frame
Kiox 400C is inconspicuously integrated into the frame and firmly installed in the top tube. This means it is optimally protected from bumps and knocks - even on fast-paced downhill rides.

Dynamic display
Kiox 400C always shows you exactly the information you need.

Charge USB-C devices
The integrated USB-C charging socket turns your eBike into a power bank. Easily charge your smartphone or eBike light - even while riding.

Brilliant display
A particularly bright 1,000 cd/m² display shows the information on the Kiox 400C in razor-sharp color. Thanks to the sensor, the brightness adapts to the ambient light.

Guidance sounds guide you
If you start the navigation in the eBike Flow app, your Kiox 400C automatically takes over the route and guides you precisely with audio instructions.

Display configuration
Customise the display of the Kiox 400C in the eBike Flow app to suit your preferences. With over 30 customisation options, you decide what you see on your display while riding.

Bosch Mini Remote

As an additional operating unit, the Mini Remote complements the System Controller, extends the range of functions and enables safe operation. It is connected to the System Controller via Bluetooth and can be flexibly mounted on the handlebars. The buttons near the thumb keep your hands on the handlebars at all times. More buttons offer more functions: With the Mini Remote, you get practical features such as smart push assistance and you can switch your eBike light on or off.

Quick to retrofit
The Mini Remote can be retrofitted quickly and is connected to the System Controller via Bluetooth.

Three buttons, more functions
The buttons on the Mini Remote have two functions: for the riding mode, the light function and the smart pushing aid, as well as for controlling a display.

Full flexibility
The Mini Remote works with or without a display. Operate the Ride Screen of the eBike Flow app or your display screens.

Intuitive operation
Short distances for the thumb and non-slip soft-touch surface: The buttons are labelled with icons and can be used intuitively.

Hardware facts

• Optional addition to the system controller for additional functions and convenient operation on the handlebars
  • Control of the ride screen or navigation screen in the eBike Flow app (smartphone) or the Bosch display
  • Smart pushing aid and innovative roll-back protection (provides support on steep, unrideable inclines and can prevent the eBike from rolling backwards)
  • Switch light on/off
• Optimum ergonomics of the buttons thanks to flat design
• Wireless mounting on the handlebars
• Soft-touch surface for particularly good grip
• LED indicates low battery of the Mini Remote, pairing activity or missing connection to the system
• The battery life (button cell CR1620) can be up to approx. 2 years and can be easily replaced by removing it from the handlebars and inserting it into the rubber insert
• IP54 protected against dust and splash water
• Temperature range: -5 °C to +40 °C (operation) and +10 °C to +40 °C (storage)
• Only available for eBikes with the smart system
• Bluetooth connectivity (Bluetooth 5.0 Low Energy)

Bosch PowerTube 600 / 800

Maximum range
With the PowerTube 600 / 800, long distances and many metres in altitude are easy to master.

Stylish eBike design
Like all Bosch PowerTubes, the PowerTube 600 / 800 is perfectly integrated into the frame. An attractive eBike design and high capacity - a combination without compromise. A new, lighter housing has been used for the battery. Provided the eBike manufacturer has prepared the eBike for this, it can be easily replaced - for more or less range.

Reliable energy supplier
High safety standards. Enormous mileage, long service life, reliable handling - the lithium-ion battery is equipped with a battery management system that protects the battery cells from overload.

User-friendly handling
The PowerTube 600 / 800 is characterised by particularly easy handling. The battery is always securely anchored in the frame on all tours, removal is via an intuitive, lockable mechanism and offers you user-friendly operation.

Comparison table