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 powerful, lightweight and quiet – with a clear focus on maximum uphill flow and a natural, controlled riding experience.

Even in its standard configuration, the drive unit delivers 85 Nm of torque, 600 watts of power and 340% assistance, offering a balanced combination of performance, efficiency and range. The system is complemented by a low weight of just 2.8 kg – around 100 g lighter than its predecessor – making it optimised for both sporty and efficient riding.

With the new Performance Upgrade 2.0, Bosch significantly enhances this performance level. From May 2026, the Drive Unit’s performance can be individually boosted: more power, higher torque and a significantly increased assistance factor will be available – directly controllable via the Bosch eBike Flow app.

The free software update enables compatible systems to achieve a noticeable boost in performance. Maximum assistance increases to up to 600 per cent, whilst peak power of up to 750 watts remains available for a longer period. In addition, the riding modes can be customised – precisely tailored to the riding environment and riding style.

• Noticeably stronger acceleration and more direct propulsion
• Up to 600% assistance factor for maximum performance
• Up to 120 Nm maximum torque
• Extended availability of peak power (up to 750 W)
• Customisable ride modes via the eBike Flow app
• A finely tuned balance between torque, power and efficiency

The upgrade has the greatest impact at lower speeds, ensuring particularly powerful acceleration from a standstill. The legally prescribed assistance limit of 25 km/h remains unchanged.

With this upgrade, the Performance Line CX achieves a maximum torque of up to 120 Nm, a motor power of up to 750 watts and an assistance level of up to 600 per cent. This further enhances the sporty character of the platform without compromising control or the natural riding feel.

Newly calibrated sensor technology for smoother power delivery

• The Performance Line CX responds more sensitively than ever before to your input
• 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 being applied to the pedals
• Acceleration and position sensors detect how the e-bike is moving

The Drive Unit does exactly what you want it to – responsively, precisely and directly.

Endless possibilities. The choice is yours
The higher torque delivers stronger acceleration. The increased maximum power makes record times possible. The enhanced assistance quadruples your own effort.

eMTB+ mode
With the built-in ‘Dynamic Control’, you ride with full control, even when you’ve increased your performance settings. On steep, bumpy terrain, you’ll enjoy confident propulsion, whilst on loose or wet surfaces it acts like traction control.

eMTB mode and Extended Boost
eMTB mode responds progressively to your input and instantly detects, based on your pedal pressure, how much power you want – dynamically, with maximum traction and always in a controlled manner. With the integrated Extended Boost, a well-timed push on the pedal is all it takes for the drive unit to propel you effortlessly over steps and rocks.

Push Assist and Hill Start Assist
With the push assist, you can push your eMTB easily, whilst the drive unit automatically adjusts the pushing speed to suit the gradient and terrain. In addition, the hill start assist enables a controlled start with strong traction, even on steep terrain. In both cases, Hill Hold is active: your eMTB stays put and doesn’t roll back unexpectedly.

Bosch eBike ABS Pro
ABS Pro is ideal for professional eBikers: designed for fast, sporty downhill riding and braking. You can make full use of your braking skills whilst still feeling how the system enhances performance.

eShift with TRP
You can choose whether eShift with TRP should change gears automatically for you, or whether you’d prefer to change gears yourself with quick manoeuvres on varied terrain – 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 cage. It is compatible with all batteries in the smart system. Please check in advance whether you can use the range extender with your e-bike.

Customisable riding modes
Your trail, your riding experience, your mode: using four parameters, you can easily tailor the riding modes to your needs via a slider in the eBike Flow app. Assistance, dynamics, maximum torque and maximum speed – you decide what you need.

Powder-coated. Robust right down to the tips

• The housing is made of magnesium – robust, corrosion-resistant and hard.
• The sealing design prevents water spray from entering.
• Bosch has managed to reduce the noise generated by the gearbox.
• The Performance Line CX motor is quiet. It strikes a balance between power delivery and noise levels

eBike Flow app

The eBike Flow app is the centrepiece of our smart system and enables you to enjoy a better, connected riding experience: safer, more personalised and more comfortable.

eBike Lock – Free additional protection against theft

The perfect complement – park your eBike. Enjoy some downtime.
eBike Lock is free for all eBikes with the smart system. When you switch on your eBike, it automatically checks whether your smartphone is nearby to act as a digital key. Only then is the motor assistance activated 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: simply remove the display from its mount and stow it away. This gives your eBike an extra layer of protection in no time. Reattach the display to activate the motor assistance and set off.

Unlock via smartphone – manually unlock your e-bike using your smartphone
Instead of automatic unlocking, you can also unlock your e-bike manually via your smartphone using a button on the home screen.

Battery Lock – Lock the battery digitally

Additional protection – protect a valuable component of your e-bike
With Battery Lock, you can provide additional digital protection for your e-bike battery: this feature ensures that your battery can no longer be used if it is stolen.

Digital keys – Flexibility with a digital key
You can use several digital keys at the same time for Battery Lock: your smartphone with the eBike Flow app, as well as your Kiox 300 or Kiox 500.

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

Protect your eBike – eBike Alarm

Park with peace of mind – valuable location and status information
Whether you’re just parking your eBike for a short while or will be away for longer, you can stay connected and put your mind at ease via your smartphone.

Two-stage alarm – Audible and visual alarm
Your eBike will alert you with audible signals and flashing LEDs if it detects movement or is being moved. You’ll also receive a notification on your smartphone.

Tracking functions – Helpful location tracking
If your eBike is moved significantly, you can use the tracking function to monitor its location.

eBike Pass – All your data always to hand
With the eBike Pass, you can keep track of important information about your eBike. Data relating to your 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 containing all the key 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
Choose the route profile and map details that suit your ride. Plan your own routes with waypoints or import existing ones from komoot.

On-screen navigation – Navigate precisely using your display
The navigation function for the Kiox 300, Kiox 400C and Kiox 500 guides you precisely to your destination – with turn-by-turn directions and clear route guidance. If you’ve subscribed to Flow+, you’ll get even more map detail on your display.

Ride Screen – Turn your smartphone into an e-bike display
With the SmartphoneGrip, you can use the Ride Screen. It not only shows you all the important ride data, but also offers full navigation with 3D map views – even in portrait mode.

Activity Tracking – Automatically record and analyse your ride data
The eBike Flow app records your ride data as soon as you set off. In the statistics, you’ll find valuable insights into your ride and fitness data – to analyse and share. If you wish, all data is also automatically synchronised with Apple Health.

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

Personalise your eBike – as unique as you are

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

Custom riding modes – fine-tune and customise
Assist, Dynamic, 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 e-bike.

Performance Upgrade 2.0 – Performance redefined
Unleash more power for your e-bike. The Performance Upgrade 2.0 delivers not only better acceleration but also stronger assistance. Thanks to software optimisations, you’ll enjoy more powerful propulsion and maintain speed for longer – with even more precise control. Maximum torque of up to 120 Nm via update. Variations may occur depending on the type of gear system. Higher performance settings may lead to increased wear and reduced range. The e-bike manufacturer may limit the maximum torque at the factory. In the eBike Flow app, therefore, only the maximum value authorised by the manufacturer can be set.

Available for:

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

Default performance settings:

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

The factory settings ensure a balanced combination of 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 smart system drive units.

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)

Available only in the USA and New Zealand:

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

You can find details on compatibility in the eBike Flow app.

The drive units are supplied as standard with a maximum assistance level of 340% or 400% – depending on the model. These settings offer a balanced combination of performance, riding enjoyment, range and wear and tear.

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

Extended Boost – Precise boost. More momentum
A targeted press of the pedal is all it takes for your e-bike to give you that decisive boost straight away. With Extended Boost, you can overcome obstacles such as steps or stones. Customise the extra boost in the eBike Flow app.

Further features

Over-the-air updates
Updates keep your eBike up to date and make it even better. You can easily download new eBike features 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 switch easily between them.

Digital service log
Your Bosch eBike dealer can synchronise your service appointment details with the eBike Flow app. Simply tap ‘My eBike’ in the app settings to view a record of what was done during your eBike’s servicing.

CO₂ savings
Find out after your ride how much CO₂ you’ve 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 trick you’ve performed, whether it’s jumps, stoppies, manuals or wheelies. To help you improve your riding technique, you’ll receive immediate feedback on the display and via an audible signal. Whilst riding, you’ll see the distance, duration, height or angle on your display for eight seconds. After your ride, you can find your best results in the eBike Flow app. This feature is enabled by default on your Kiox 400C and Purion 400. For all other displays, you can activate it at any time in the display settings, as well as switch the audible alert on and off. The sensors are configured to respond only to distinct 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: e-bike battery / internal battery
• Charging option for external devices via USB-C®
• Dynamic screen display without the need to manually switch screens
• Audible alerts during navigation
• Display configuration with 30 customisation options via the eBike Flow app
• Expandable with Mini Remote for more convenient operation

Product features

• Dimensions (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 within the frame
The Kiox 400C is discreetly integrated into the frame and securely mounted in the top tube. This provides optimum protection against knocks and impacts – even on fast-paced downhill rides.

Dynamic display
The Kiox 400C always shows you exactly the information you need at any given moment.

Charging USB-C devices
The integrated USB-C charging port turns your e-bike into a power bank. Charge your smartphone or e-bike light with ease – even whilst riding.

Brilliant display
With an exceptionally bright 1,000 cd/m², the Kiox 400C displays information in crisp, vivid color. Thanks to a sensor, the brightness adjusts to the ambient light.

Audio cues guide you
When you start navigation in the eBike Flow app, your Kiox 400C automatically takes over the route and guides you precisely with audible prompts.

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

Bosch Mini Remote

As an additional control unit, the Mini Remote complements the System Controller, expands 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. Thanks to the buttons within easy reach of your thumbs, your hands stay on the handlebars at all times. More buttons mean more functions: with the Mini Remote, you get handy features such as the smart push assist and you can switch your e-bike lights on or off.

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

Three buttons, more functions
The buttons on the Mini Remote have dual functions: for ride mode, the light function and the smart push assist, as well as for controlling a display.

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

Intuitive operation
Short travel for your thumb and a non-slip soft-touch surface: the buttons feature icons and are intuitive to use.

Hardware facts

• Optional add-on to the System Controller for additional functions and convenient operation from the handlebars
  • Control of the Ride Screen or the navigation screen in the eBike Flow app (smartphone) or the Bosch display
  • Smart push assist and innovative roll-back protection (provides assistance on steep, impassable inclines and can prevent the eBike from rolling backwards)
  • Switch lights on/off
• Optimal button ergonomics thanks to the flat design
• Wireless mounting on the handlebars
• Soft-touch surface for excellent grip
• LED indicates low battery on the Mini Remote, pairing activity or a lost connection to the system
• The battery life (CR1620 button cell) can be up to approx. 2 years, and the battery can be easily replaced by removing it from the handlebars and inserting it into the rubber insert
• IP54 protection against dust and splashing water
• Temperature range: -5 °C to +40 °C (operation) and +10 °C to +40 °C (storage)
• Only available for e-bikes 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 significant elevation gains are easy to tackle.

Stylish e-bike design
Like all Bosch PowerTubes, the PowerTube 600 / 800 is perfectly integrated into the frame. An attractive e-bike design and high capacity – a combination that makes no compromises. A new, lighter casing has been used for the battery. Provided the e-bike manufacturer has designed the e-bike to allow for it, the battery can be easily swapped – for a longer or, if needed, shorter range.

Reliable power source
High safety standards. Impressive mileage, long service life, reliable performance – the lithium-ion battery is equipped with a battery management system that protects the battery cells from overloading.

User-friendly handling
The PowerTube 600 / 800 stands out for its particularly simple handling. The battery is always securely anchored in the frame on all rides; removal is via an intuitive, lockable mechanism, offering you user-friendly operation.

Comparison table