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For 2025, Bosch is coming up with major innovations in e-bike systems that focus on improving performance, sustainability and user comfort. Key innovations include an improved 5th generation Performance Line CX motor, new PowerTube 600 and 800 Wh batteries, an upgraded Purion 400 display and new safety technologies such as ABS Pro and Hill Start Assist. Bosch continues to focus on environmental friendliness, which is evident not only in the use of recycled materials, but also in the efforts to reduce the carbon footprint during production.
Bosch Performance Line CX Gen 5 engine: quieter, lighter and smarter
The Performance Line CX engine, which is very popular among e-mountain bikers, has been upgraded for 2025. While its power output remains at 85Nm and a peak 600W, the new version offers a number of small but significant improvements. Thanks to a new magnesium housing, the motor is lighter (2.8 kg) and offers quieter running thanks to a gearbox modification. In addition, the mounting system has been improved and now uses only two screws, making it easier to install.
Another major improvement is the new generation of sensors that provide even more precise measurement of rider inputs, including torque, cadence and terrain conditions, ensuring a more natural power transfer to the rear wheel. The engine also offers a new hill start assist function and improved walk assist, adding to the comfort and safety of the ride, especially on technically demanding tracks.
Bosch CX 5th Generation: the evolution in electric bike propulsion
When choosing an e-bike, one of the key considerations is the motor that helps you pedal. Bosch, a leading player in electric drives, recently introduced its 5th generation Bosch Performance Line CX motor. This new model brings several major improvements that promise better performance, comfort and overall riding experience. So what does it bring over its predecessor and how can it make your journey easier?
More power for every step
Torque, the force the motor can generate when pedalling, is crucial to the performance of an e-bike motor. The Bosch CX 5th generation offers up to 85 Nm, a significant improvement on the previous version's 75 Nm. What does this mean for you? When pedalling up steep hills or when riding with a load, you'll feel the motor assist significantly more, ensuring a smoother and less strenuous ride.
Smoothness especially
The Bosch CX 5th generation has not only increased the power, but also the smoothness of the assistance. Thanks to improved software, the motor responds more accurately to your pedaling. Whether you're riding on flat ground or climbing hills, the engine adapts to the conditions and gives you exactly the assistance you need. The result is a more natural and comfortable ride without jerky changes in performance.
Lighter, more controllable, more powerful
Weight is important for cycling, and that goes for electric bikes too. Although the 4th generation motor was already light, the 5th generation is even a little lighter, making the bike easier to handle and more maneuverable. A lighter motor also puts less strain on the bike's components, which can extend their life.
Cooling for long trips
Long trips, especially under heavy load or in hot weather, can lead to engine overheating. However, the Bosch CX 5th generation brings improved cooling to ensure that the engine can maintain high performance even under prolonged load without the risk of overheating. You'll especially appreciate this during long drives or extreme conditions.
New modes for a comfortable ride
In addition to the proven eMTB mode, the Bosch CX 5th generation also introduces a new Auto mode. This automatically adapts the level of assistance to the terrain and your pedalling without having to switch between different modes. This mode is ideal for everyday use, whether you're riding around town or in the countryside.
Better integration with smart technology
The new motor is fully compatible with Bosch smart systems such as the Kiox 300 or Smart System. These systems allow you to track ride details directly on your phone, from battery status to route mapping. Modern technology will simplify planning and the ride itself, while you can concentrate on the driving experience.
The 5th generation Bosch CX represents a significant step forward, offering more power, better handling and advanced technology to help you enjoy your e-bike ride to the fullest.
New PowerTube 600 and 800 batteries: higher performance and sustainability
Bosch introduces the new PowerTube 600 and 800 batteries, which boast higher capacity and lower weight. The PowerTube 800 weighs 3.9 kg, 400 g less than the previous 750 Wh models, yet offers a longer range. The new batteries are also more compact, which contributes to better handling of the e-bikes. What's more, they have been made with the environment in mind, not only by using recycled materials, but also because Bosch uses renewable energy in their production.
Interested
The two batteries - 600 Wh and 800 Wh - have the same length of 435 mm, almost 5 centimetres shorter than the 750Wh version, which measures 484 mm. This is made possible by the use of advanced 21700 cells and a modified cross-section that differs between the two batteries. The advantage of the same length is that they use the same bracket. In other words, if the bottom frame has enough space for an 800Wh battery, you can easily use a 600Wh model as a second battery.
Purion 400 display: the new standard for e-bikes
The new Purion 400 display, which Bosch is introducing with the CX Gen 5 engine, brings an improved user interface. The display is durable, clear and easy to read even in direct sunlight. It offers all important riding data, including speed, cadence, power, range and battery status. The display can be linked to the Bosch eBike Flow app, which allows further customisation of riding modes.
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The display is placed in an ideal position where it is protected by both the handlebars and the stem.
The display size of 1.6" with a resolution of 320 x 160 pixels guarantees excellent readability.
An integrated buzzer provides audible alerts for system messages.
Always up-to-date with the possibility of future updates and adding new features.
eSHIFT: the revolutionary system for easy and efficient shifting on electric bikes
With the growing popularity of e-bikes, technology is evolving to make riding more comfortable and efficient. One of the most significant innovations is the eShift system, which revolutionises gear shifting. This system is designed to provide users with seamless shifting that adapts to their individual needs and driving style.
How eShift works
eShift is characterised by its simplicity and efficiency, making gear shifting almost automatic. Depending on the variant of eShift, riders can choose whether they want to shift themselves or have the system shift automatically. This automated mode optimises the gears so that the rider can pedal within their individual comfort zone. This means they don't have to worry about the right gear when the terrain changes and can concentrate fully on driving.
Adapting to different types of electric bikes
The eShift system has been designed with a variety of e-bike types in mind, making it a one-size-fits-all solution. Whether it's a city bike, mountain bike or e-cargo bike, eShift can adapt to the needs of every rider. The system constantly monitors current conditions and recommends the ideal gear ratio in real time, contributing to an optimum smooth ride.
Harmony of fluidity and efficiency
One of the main benefits of eShift is the harmony between smooth gear shifting and the ideal gear ratio. The system advises the rider when and how to shift correctly, eliminating unwanted interruptions to the driving rhythm. It also ensures that the rider is never in a situation where they have to pedal too hard or too weak, which can be frustrating and tiring. In this way, eShift takes care of not only comfort but also the efficiency of the ride.
Working with experts
The introduction of eShift was not possible without the cooperation of renowned partners in the field of transmission systems. This joint project with shifting experts has enabled the creation of a robust and reliable system that meets the demands of modern cyclists. Thanks to this collaboration, eShift is not only technologically advanced but also extremely user-friendly.
The eShift system is changing the way you shift on electric bikes, bringing a new standard for efficiency and convenience. Whether you're a novice cyclist or a seasoned pro, eShift will give you a great riding experience. Thanks to innovative technology and expert collaboration, you can count on every trip to be smooth and worry-free.
Safety technology: ABS Pro and Hill Start Assist
Bosch is also introducing new technologies for 2025 aimed at improving driver safety The new ABS Pro system ensures safe braking even on slippery surfaces or in corners, helping to prevent skids and loss of wheel control
There is also a new Hill Start Assist function The Hill Start Assist function simplifies hill starts on rough terrain, which you'll appreciate on both eCargo and eMTB bikes. Simply put your foot on the pedal, press and hold the minus button: the motor will help you get off smoothly, even when the bike is fully loaded.
Does Bosch keep its lead
With new players in the market such as DJI, ZF, and plans from competitors such as Shimano and SRAM, Bosch is facing strong pressure While the CX Gen 5 motor isn't looking to revolutionize, its incremental improvements, including quieter operation, improved sensors, and lighter batteries, make it a strong candidate to maintain its position in the market Bosch remains true to its philosophy of reliability and refinement, making it the e-bike technology leader for 2025
These innovations show that Bosch is continuing its journey towards a more sustainable and advanced future for e-bikes, taking the riding experience to a new level