Comparison of Bosch eBike motors
Comparison of Bosch drive unit models and generations. From ultra-lightweight units for gravel to uncompromising beasts for heavy terrain.

CX Gen 5
Performance Line BDU384Y120 Nm
750 W
600 %
Ride feel
Aggressive, dynamic, and instant response. Strongest climbing pull. Clearly focused on pure power for conquering the most difficult passages.
Bike category
- Full power e-MTB
- Enduro and All-Mountain
- Heavy terrain
Who is it for?
Mountain bikers who ride heavy terrain, steep climbs full of roots, and need explosive power and Extended Boost for obstacles.

PX
Performance Line BDU347Y90 Nm
700 W
600 %
Ride feel
Extremely smooth, quiet, and refined performance without jerking. Offers massive power and "pull" even from low cadences. A compromise of comfort and power.
Bike category
- Trekking and Touring
- SUV e-bikes
- Riding with panniers
Who is it for?
Travelers and excursionists. Those who want a strong motor that can pull a fully loaded bike uphill but prefer absolute peace and quiet.

Performance Line
BDU346Y75 Nm
600 W
340 %
Ride feel
Comfortable and reliable performance with a natural response. A great compromise between efficiency and sufficient power for everyday and longer routes.
Bike category
- Trekking and Touring
- City bikes
- Leisure e-bikes
Who is it for?
Ideal for daily commuting and weekend trips. For those looking for a golden middle ground without extreme power fluctuations.

Active Line Plus
The Smart System BDU344Y60 Nm
600 W
340 %
Ride feel
Absolutely silent and harmonious ride. It dispenses power so smoothly that you perceive the motor as a natural extension of your own legs, without mechanical resistance.
Bike category
- City bikes
- Cross e-bikes
- Trekking
Who is it for?
An ideal choice for calm riders looking for reliable help in the city and nature, preferring silence over aggressive power.

SX
Performance Line BDU314Y60 Nm
600 W
400 %
Ride feel
Very quiet and natural. To achieve peak power, it requires a higher pedaling cadence. The reward is a ride feel without resistance.
Bike category
- Light e-MTB
- Gravel e-bikes
- Fitness and urban
Who is it for?
Sporty riders who want to work hard, appreciate the bike's minimal weight, and perceive the motor more as a "helping wind at their back".

Hub Line
Hub motor BDU306Y45 Nm
400 W
Auto
Ride feel
A minimalist drive in the rear wheel provides a very smooth start and zero resistance when pedaling without assistance.
Bike category
- Light e-bikes
- City and Fitness
- Gravel
Who is it for?
Urban commuters and purists who demand the clean look of a classic bike with the ability to easily carry it up the stairs.
Choose CX if...
you enjoy singletracks, descents, and technical climbs where you couldn't make it without an extremely strong motor. You need instant explosive power and absolute acceleration.
Choose PX if...
you are a "mileage eater", ride heavy with panniers, or commute. You want the huge power of the CX motor, but tuned for maximum silence and smoothness without jerking.
Choose Perf. Line if...
you are a recreational cyclist for whom comfort is the priority. You want reliable assistance for everyday trips and weekend rides on moderate terrain.
Choose Active Line Plus if...
you are looking for a completely quiet and carefree drive for city commuting or nature trips and prefer harmonious power delivery without mechanical resistance.
Choose SX if...
you are looking for an e-bike weighing under 18 kg, which is easy to handle and ride even under your own power. You like to raise your heart rate while riding and are looking for the feel of a classic bike.
Choose Hub Line if...
you require the minimalist look of a classic bike, low weight for easy carrying, and reliable, discreet help in city traffic.
Other models and previous specifications
Race special for e-Enduro and extreme tracks with Race mode.
For cargo e-bikes, strong pull at low cadence.
For S-Pedelecs (commuting) with assistance up to 45 km/h.
Previous standard version of the drive for eMTB.
Proven and quiet drive for trekking.
Previous standard assistance for city and surroundings.
Weakest and quietest drive purely for the city.
