Bosch eBike Systems

MY2024 Innovations

New SX Lightweight Drive Unit and CompactTube 400 Battery

New benchmark for lightweight eBikes:

Bosch presents the compact Performance Line SX and Sprint drive units.

  • Performance Line SX and redefines power-to-weight ratio Performance Line Sprint
  • Riding sensation of a conventional bike for Light eMTBs, Gravel eBikes and Urban eBikes
  • Low system weight of approximately 8.8 lbs
  • Also compatible: new riding mode and compact batteries

With the Performance Line SX and Performance Line Sprint, Bosch eBike Systems is setting new standards for riding with lightweight eMTBs, Gravel eBikes and Urban eBikes. The new drive unit combines high performance with low weight – making it one of the Bosch drives with the highest power density. These features and the finely tuned support ensure a natural riding sensation and enable athletic eBike riding on the trail and training on gravel, as well as fast rides through the city.

“Now that most types of bicycles have been electrified, the individual categories are becoming even more diverse. With the new Performance Line SX and Performance Line Sprint, we are primarily targeting sporty riders, for whom a low total weight is important for riding fast and experiencing a natural flow,” explains Claus Fleischer, CEO of Bosch eBike Systems. “Our goal was to maintain the typical Bosch quality, riding performance and reliability and transfer these to light, agile bikes. With the Performance Line SX, state-of-the-art eBike designs and maximum riding fun can be optimally combined.”

Bosch Performance Line SX action

New agility in eMTB riding

With a Light eMTB, the combination of frame geometry, weight, motor power and battery capacity essentially determine the ride characteristics. Riders of this type of eMTB benefit from the advantages of the Performance Line SX, especially on trails with frequent technical sections and tight bends. The peak power of up to 600 W that can be generated at high cadence effectively supports eBike riders, for example on steep uphill sections. On flatter terrain or in downhill sections, the drive unit, which weighs only around 4.4 lbs thanks to its lightweight design and magnesium housing, provides the necessary agility and excels thanks to its efficient energy-saving characteristics. It delivers a maximum torque of 55 newton meters and a power-to-weight ratio of up to 300 watts per kilogram. Combined with its sensitive response characteristics, the Performance Line SX enables a very natural riding sensation. When riding with a high pedal power and at a high cadence, riders are rewarded with powerful support. This is supplemented by the perfectly tuned, dynamic-progressive Tour+ and eMTB riding modes, which can be customized using the eBike Flow app.

The energy for trail adventures is provided by the new CompactTube 400 battery, which is also optimally adapted to the Performance Line SX and Performance Line Sprint. As one of the lightest batteries in the Bosch eBike portfolio that can be integrated into the frame down tube, it also features the highest energy density thanks to innovative cell technology. Weighing only around 4.4 lbs, it has a capacity of 400 watt-hours – more than sufficient for sporty, ambitious riders who put more power into the pedals. When additional battery power is needed on intense trails, the new PowerMore 250 range extender (approx. 3.5 lbs, 250 watt-hours), which is only the size of a water bottle, increases the range by more than 60 percent in conjunction with the CompactTube 400.

Technical refinements for a particularly natural riding sensation

In addition to the specific advantages of the Performance Line SX and Performance Line Sprint for Light eMTBs, Gravel eBikes and Urban eBikes, the new drive units deliver further optimizations across all areas of application. These include, for example, the innovative, very low-noise motor and gearbox concept. Thanks to a new sealing concept and narrow cranks (Q factor: 6.3 in), the pedal resistance is barely noticeable, making the eBike experience even more pleasant.

The first models with the Performance Line SX are expected to be available on the market from Winter 2023.

Learn more at

Bosch Performance Line SX motor


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