Automatic Shifting Rear Derailleurs with Bosch, TRP and Shimano

Bosch drops some new smart tech with TRP and Shimano at Eurobike. Deets in press release below

More comfortable gear shifting for eBikes
Bosch expands eShift portfolio in the smart system with TRP and Shimano gear shifting systems

- More comfort and fun, less material wear: integrated electronic eShift gear shifting solution improves eBike experience
- For additional application areas: Expansion of eShift portfolio in technological partnership with TRP and Shimano
smart system features eShift solutions for eBikes with derailleur system for the first time
- Auto downshift function can now be customized in the eBike Flow app

Stuttgart/Reutlingen – Focus on eBike riding without the added need to think about shifting. Bosch eBike Systems presented the first eShift solutions for electronic shifting back in 2014 and has since further developed them together with shifting system partners. Bosch is now expanding its eShift portfolio in the smart system, providing more choice, more comfort, and more fun. Depending on the system, electronic gear shifting offers two major advantages for eBike riders: When shifting manually, eShift ensures optimal gear changes at the ideal time. Motor support is interrupted for fractions of a second in the process. The gear changes are rendered smooth and silent. A positive side effect here is that material wear on the drive is also reduced. Alternatively, eShift can change gears fully automatically: The shifting system then automatically adapts the gear to a preset cadence. This means that eBike riders always ride in the correct gear ratio and the riding experience is much more relaxed and comfortable – wrong gear changes become a thing of the past.

In addition to the previously available eShift solutions from Rohloff, 3X3, and enviolo, Bosch is now integrating new shifting systems from TRP and Shimano into the smart system. "Our electronic eShift gear shifting solution offers numerous advantages. More comfort, more fun, and reduced material wear: eBike riders benefit from this technology in a wide range of applications – on eMTBs as well as in the city. In collaboration with TRP and Shimano, we're expanding our portfolio and integrating derailleur solutions for eBikes into the smart system for the first time," says Claus Fleischer, CEO of Bosch eBike Systems.

For athletic eBikers: automatic derailleur system now available in the smart system for the first time

Strong riders have always appreciated the advantages of derailleur systems: They are lightweight and their fine gear ratio increments ensure efficient pedaling. eBike riders can now benefit from the first automatic derailleur solution in the smart system. The TRP E.A.S.I. A12 has been specially designed for eMTBs and gravel eBikes and is available as an eShift solution exclusively in conjunction with the Bosch Performance Line CX and Performance Line SX motors. During automatic gear shifting, the correct gear is automatically selected according to a previously defined individual cadence. This means less focus on the correct shifting torque and more fun on the road.

The "RollShift" feature also ensures additional flow: The rear derailleur automatically shifts to the appropriate gear when slowing down or accelerating during coasting phases without pedaling. This ensures a particularly smooth transition when stepping into the pedals again.

Those who prefer shifting gears themselves in certain riding situations can switch to manual mode at any time at the press of a button on the shifter while riding. The Kiox and Purion displays or the Ride screen on the phone indicate the current mode and the engaged gear at all times. The appropriate gear can also be engaged during the coasting phase before starting to pedal again when shifting manually. For a modern and sleek appearance, the shifter is wirelessly connected to the rear derailleur and the battery required is simple to replace.

For commuters and everyday riding: Shimano CUES Di2
With Shimano's new CUES Di2, Bosch is integrating a further eShift solution for derailleur solutions into the smart system. This makes gear changes particularly quiet, smooth and cuts down wear on the materials. This is made possible by reducing the motor support for a fraction of a second during gear changes. In the manual variant, the system provides a shift recommendation on the display or on the Ride screen in the eBike Flow app. Commuters benefit from this as they ride through the city, as do eBike riders on trekking tours in the countryside.

For the city and touring: Shimano NEXUS Di2
The Shimano NEXUS Di2 hub gear system with eShift makes particularly smooth and comfortable gear changes possible when riding the eBike. The big advantage here is that eBike riders with hub gear systems normally have to stop pedaling to change gears. With the eShift solution, they can just keep on pedaling. The solution assists with manual shifting and always changes gear at the ideal time, depending on the pedal position. A suitable shift recommendation is also indicated on the Kiox and Purion displays or on the Ride screen in the eBike Flow app. Moreover, riding off in an excessively hard gear is a thing of the past – because gear changes are possible even when stationary.

For riding off easily after a stop, auto-downshift can be customized in the eBike Flow app
The auto-downshift function automatically shifts to a lower gear when coming to a stop to make riding off easier. This helps eBike riders on hills as well as riders of heavy cargo eBikes at traffic lights. But which is the right gear? You can now set this individually for yourself in the eBike Flow app – according to your personal taste. This feature can now also be enabled or disabled as required. Auto-downshift will be available from fall 2024 in conjunction with the already familiar eShift partner solutions from 3X3 and Rohloff.

The TRP E.A.S.I. A12 is the first derailleur solution featuring eShift in Bosch's smart system – athletic eBike riders can choose between automatic shifting and manual operation.

Shimano's new CUES Di2 with eShift enables particularly quiet, smooth gear changing with less material wear thanks to a reduction in motor support for fractions of a second during gear changes.

The Shimano NEXUS Di2 hub gear system with eShift supports manual shifting and always changes gears at the ideal time, depending on the pedal position.

Bosch eBike Systems is shaping the future of eBike mobility with innovative products and digital services ranging from highly efficient drive systems to the first production-ready ABS for eBikes and connected biking solutions. On daily routes through the city, on leisurely rides through the countryside or for sporting adventures in the mountains: Bosch eBike Systems offers eBike riders the right drive system (drive unit, battery, display, and app) for every requirement and every area of use, ensuring a unique riding sensation. Today, more than 100 of the world's leading bicycle brands trust the perfectly coordinated, modular product portfolio. As an independent division within the Bosch Group, Bosch eBike Systems also makes use of the Group's technology and manufacturing expertise. For healthy, safe and sustainable mobility that is fun.

For more information please visit https://www.bosch-ebike.com/us/

About Bosch
Having established a presence in North America in 1906, today the Bosch Group employs 42,000 associates in more than 100 locations in the North American region (as of Dec. 31, 2023). Bosch generated consolidated sales of $16.5 billion in the U.S., Mexico and Canada in 2023. For more information visit www.bosch.us, www.bosch.mx and www.bosch.ca.

The Bosch Group is a leading global supplier of technology and services. It employs roughly 429,000 associates worldwide (as of December 31, 2023). The company generated sales of $99 billion in 2023. Its operations are divided into four business sectors: Mobility, Industrial Technology, Consumer Goods, and Energy and Building Technology. With its business activities, the company aims to use technology to help shape universal trends such as automation, electrification, digitalization, connectivity, and an orientation to sustainability. In this context, Bosch’s broad diversification across regions and industries strengthens its innovativeness and robustness. Bosch uses its proven expertise in sensor technology, software, and services to offer customers cross-domain solutions from a single source. It also applies its expertise in connectivity and artificial intelligence in order to develop and manufacture user-friendly, sustainable products. With technology that is “Invented for life,” Bosch wants to help improve quality of life and conserve natural resources. The Bosch Group comprises Robert Bosch GmbH and its roughly 470 subsidiary and regional companies in over 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. Bosch’s innovative strength is key to the company’s further development. At 136 locations across the globe, Bosch employs some 90,000 associates in research and development, of which nearly 48,000 are software engineers.

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