Smart Support

Experience a relaxed and safe cycling sensation with the gentle delivery of support from a quiet eBike drive unit. No disturbing extraneous noises, minimal pedal resistance over 25 km/h or when switched off and an elegant, clean look. Enjoy the smallest, lightest and most elegant system in the Bosch eBike family. The drive unit is also available with a backpedal function.

Optimised Trail Control

No Trigger! Simply pure riding experience. A mode for eMountain bikers: the eMTB-mode replaces the previous Sport mode of the Performance Line CX and switches between the Tour and Turbo riding modes. With a maximum torque of up to 75 Nm, the motor dynamically supports the rider‘s own pedal power by between 120% and 300%. 

Depending on the pedal pressure, the progressive motor support automatically adapts to the individual riding style. Without changing gear, the motor always provides support at the ideal power level, even at low cadences. Starting on steep slopes is problem free and off-road riding is made significantly easier. This provides a natural riding experience and maximum performance on the trail.

Optimised Direct flow

Starting off in a new dimension. For powerful uphill starts on rough terrain: The improved start-up behaviour guarantees optimal support in all terrains and on any trail. Setting off is made significantly easier. In eMTB-mode, the rider receives the required power – always precisely at the right moment.

Better Power Delivery
Ensures maximum traction and control.

Sporty Starting
Perfect start-up behaviour as soon as you press.

Improved Dynamics
Enables effortless riding on technical uphill trails or over obstacles.




“This mode is a silent revolution! The new „eMTB“ mode from the software designers at Bosch is a huge hit. Highly responsive to every pedal stroke, the drive unit always delivers the perfect dose of power. Steep ascents on loose ground?

Starting up steep gravel slopes? Rear wheel spin? Switching between different modes? No problem. eMTB mode works anywhere and everywhere. Power is delivered in far smaller increments and transferred to the chain much more smoothly. The much larger range of usable power assistance makes the Bosch drive unit more fun than ever.”

“[…] You just don‘t need to change gear anymore! The new eMTB mode works so well that it has completely changed the way I ride my eMTB. I used to use the power assistance switch like a gear lever, but now I can ride anywhere in one mode. The drive unit responds to the slightest touch of the pedal and always delivers the right amount of assistance. There‘s no loss of traction on steep sections because you forgot to change gear, no worrying about whether you‘ve selected the right assistance level. And when starting up steep climbs, the power delivery is spontaneous and perfectly modulated. Bosch‘s eMTB mode puts its competitors in the Far East in the shade when it comes to modulation. Simply switch on, ride and forget you‘re on an eMTB – Shimano accomplished this with its Trail mode. Now Bosch has come up with a system that packs far more punch. And the best bit: All CX drive units are backwards compatible.”

E-MTB Magazine


„Ambitious riders basically want two main things: great precision and response. With the new eMTB-mode from Bosch, the e-bike delivers a precise, modulated response to my input. Leaving me to focus on the important stuff: riding.“