Bosch Performance Line CX Generation 5 – Smart System

Performance Upgrade 2.0 for Bosch Performance Line CX (BDU384Y)

The Bosch Performance Line CX (BDU384Y) sets a new standard for riding dynamics and agility in the e-bike sector. It is designed to be 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 a balanced combination of performance, efficiency and range, with 85 Nm of torque, 600 watts of power and 340 per cent assistance. The system is complemented by a low weight of just 2.8 kg – around 100 g lighter than its predecessor – and is 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 drive unit’s performance can be individually enhanced: 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 per cent, whilst the peak power of up to 750 watts remains available for 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 maximum torque
• Extended peak power availability (up to 750 W)
• Customised configuration of the riding modes via the eBike Flow app
• A finely tuned balance between torque, power and efficiency

The upgrade is most effective at lower speeds 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 per cent. This further enhances the sporty character of the platform without compromising control or the natural riding feel.

Newly tuned sensors for more precise power delivery

• The Performance Line CX responds more sensitively to your input than ever before
• Bosch has re-engineered and improved the signals from the sensors
• The cadence sensor measures how fast the cranks are turning
• The torque sensor measures the force applied to the pedals
• Acceleration and position sensors detect how the e-bike is moving

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

All the options. Your choice
The higher torque ensures stronger acceleration. The increased maximum power enables you to achieve your best times. The increased assistance quadruples your own power.

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 enjoy superior propulsion, whilst on loose or wet surfaces it acts like traction control.

eMTB mode and Extended Boost
The eMTB mode responds progressively to your input and instantly recognises how much power you need based on your pedal pressure – dynamically, with maximum traction and always in control. With the integrated Extended Boost, all it takes is a focused push on the pedal and the Drive Unit propels you effortlessly over steps and stones.

Push assist and hill start assist
With push assist, you can easily push your eMTB, whilst the Drive Unit automatically adjusts the pushing speed to suit the gradient and surface. In addition, hill start assist enables a controlled start with high traction, even on steep terrain. Hill Hold is active in both cases: your eMTB stays in place and does not roll backwards 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 you want eShift with TRP to change gears automatically for you, or whether you want to change gears yourself on varied terrain with quick 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 is compatible with all batteries in the smart system. Please check in advance whether you can use the range extender with your eBike.

Customised riding modes
Your trail, your riding experience, your mode: using four parameters, you can easily customise the riding modes to suit your needs via the slider in the eBike Flow app. Support, 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 splashes from getting in.
• 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 offers you a better, connected riding experience: safer, more personalised and more convenient.

eBike Lock – free extra protection against theft

The ideal addition – park your eBike. Enjoy some time out.
eBike Lock is free of charge for all eBikes equipped 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 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: simply remove the display from its mount and stow it away. This instantly provides your eBike with extra protection. Put the display back in place and use it to activate the motor assistance so you can set off.

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

Battery Lock – digitally lock the battery

Additional protection – protect a valuable component of your e-bike
With Battery Lock, you can also protect your e-bike battery digitally: this function 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 and 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+ 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 just parking your eBike for a short while or leaving it for a longer period, 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 illuminated LEDs if it detects movement or is moved. You will also receive a notification on your smartphone.

Tracking functions – useful location tracking
If your eBike is moved frequently, you can use the tracking function to track its location.

eBike Pass – All data always to hand
The eBike Pass allows you to keep track of important information about your eBike. Data about the eBike is stored here. You can add details manually – even without using eBike Alarm.

Theft report – quick assistance in the event of theft
If your eBike is stolen, you can create a document containing 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 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 see even more map details on your display.

Ride Screen – turn your smartphone into an e-bike 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 a 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 ride and fitness data – for analysis and sharing. If you wish, all data can also be automatically synchronised with Apple Health.

komoot 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 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 featuring your favourite information. Choose from over 30 display options and organise them as you wish.

Custom riding modes – fine-tune and personalise
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 e-bike. The Performance Upgrade 2.0 not only delivers better acceleration but also stronger assistance. Software optimisations give you more powerful propulsion and keep you going faster for longer – with even more precise control. Maximum torque of up to 120 Nm per update. Values may vary depending on the type of gear system. Higher performance settings can lead to increased wear and reduced range. The e-bike manufacturer may limit the maximum torque at the factory. Consequently, 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)

Standard performance values:

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

Available 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 as standard with a maximum of 340% or 400% assistance – depending on the model. These settings offer a balanced combination of performance, riding enjoyment, range and wear.

Display configuration
Configure your Kiox 300, Kiox 400C or Kiox 500 display to suit 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 Extended Boost, you can overcome obstacles such as steps or stones. Customise the extra boost in the eBike Flow app.

Additional features

Over-the-air updates
Updates keep your eBike up to date and even improve its performance. 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 switch between them easily.

Digital service log
Your Bosch eBike dealer can synchronise the details of your service appointments with the eBike Flow app. Simply tap on ‘My eBike’ in the app settings and you’ll find a record of what was done when your eBike was serviced.

CO₂ savings
After your ride, find out 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 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 audible signal. During your ride, you can view 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 function is enabled by default on your Kiox 400C and Purion 400. For all other displays, you can enable it at any time in the display settings and switch the signal tone on or off. The sensor system is configured to react 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 manual screen switching
• Warning tones for navigation
• Display configuration with 30 customisation options via the eBike Flow app
• Can be expanded with the 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

Further details

Protected within the frame
The Kiox 400C is discreetly integrated into the frame and securely mounted on the top tube. This means it is optimally protected from bumps and knocks – even on fast-paced downhill rides.

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

Charge USB-C devices
The integrated USB-C charging port turns your e-bike into a power bank. Easily charge your smartphone or e-bike light – even whilst 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 adjusts to the ambient light.

Guidance sounds guide you
If you start 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 Kiox 400C’s display in the eBike Flow app to suit your preferences. With over 30 customisation options, you decide 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 connects to the System Controller via Bluetooth and can be flexibly mounted on the handlebars. The buttons positioned near your thumb allow you to keep your hands on the handlebars at all times. More buttons mean more functions: with the Mini Remote, you gain access to practical features such as smart push assistance and 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 push assist, as well as for controlling the 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 the thumb and a non-slip soft-touch surface: the buttons are labelled with icons and can be used intuitively.

Hardware details

• Optional addition to the system controller for extra 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 push assist 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 their flat design
• Wireless mounting on the handlebars
• Soft-touch surface for a particularly good 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 approximately 2 years and 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 ABS Pro

• Carefree riding: more effective and safer braking
• Uses: Commuting , city riding, touring and mountain biking
• Four ABS modes
  • ABS Cargo
  • ABS Touring
  • ABS All-road
  • ABS Trail
• Design: Enables a clean e-bike design

Features

Front-wheel ABS
Wheel speed sensors monitor the speed of the wheels. If the front wheel threatens to lock, the Bosch eBike ABS regulates the braking pressure – for greater riding stability and better manoeuvrability.

Rear-wheel lift control
The intelligent rear-wheel lift control reduces the likelihood of the rear wheel lifting during heavy braking. This reduces the risk of a rollover and allows the front brake to be used more effectively.

Suitable ABS modes
To provide optimum support during braking, a suitable ABS mode is available for every type of eBike.

Viewing braking statistics
The display and the eBike Flow app show your personal braking statistics. Braking distance, braking duration and ABS activations can be recorded for each ride. The app displays all braking events as well as the proportion of ABS activations across all activities.

Improving braking behaviour
Develop a better understanding of how different road surfaces affect braking distance. Compare braking distances on gravel and tarmac and analyse your own braking to specifically improve your braking performance.

Further benefits

Advanced technology
Thanks to improved software and new sensor technology, the Bosch eBike ABS now detects the bike’s tilt even more precisely. This allows braking pressure to be regulated even more accurately and further reduces braking distance.

Optimally matched
The Bosch eBike ABS is compatible with selected brakes from Shimano, Magura, TRP and Tektro and is optimally matched to them. This allows for maximum flexibility when choosing the right eBike.

ABS modes in detail

ABS modes – variants
Because every eBike has different requirements, there isn’t just one ABS system for all, but the right ABS mode for every type of eBike. In this way, the system provides optimum support during braking and ensures greater control in every situation.

ABS Cargo – Tour+ mode
ABS Cargo offers greater control when braking – whether fully loaded on the way to nursery or when carrying the weekly shop. Even with a heavy load, the system enables faster and more stable braking.

ABS Trail – eMTB mode
ABS Trail has been specially developed for demanding routes, challenging terrain and sporty riding manoeuvres. This mode enhances performance and increases riding enjoyment on technical trails.

ABS Allroad – eMTB mode
For sporty rides off the beaten track, the eBike ABS offers powerful and natural braking assistance. This maintains greater control and allows you to tackle demanding terrain more safely.

ABS Touring – Tour+ mode
With ABS Touring, unexpected braking situations can be handled with greater control. This mode offers additional safety on changing road surfaces, at pedestrian crossings and at traffic lights.

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 seamlessly integrated into the frame. An attractive e-bike design and high capacity – a combination without compromise. A new, lighter casing has been used for the battery. Provided the e-bike manufacturer has designed the e-bike to accommodate this, it can be easily replaced – to increase or decrease the range.

Reliable power source
High safety standards. Enormous mileage, long service life, reliable performance – 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 its particularly easy handling. The battery is always securely anchored in the frame on all rides; removal is via an intuitive, lockable mechanism, offering user-friendly operation.

Comparison table