Bosch Performance Line Speed 5th Generation Motor

Bosch Performance Line Speed (Gen 5): A new standard for fast and dynamic commuting

bosch performance line speed 5. gen

With the arrival of the fifth generation of motors from Bosch, the boundaries of mobility are shifting once again. The Performance Line Speed model (designation BDU388Y) is not just an evolution; it is a technological manifesto designed for those who demand maximum speed, uncompromising power, and intelligent connectivity. As an S-Pedelec motor, it offers support up to 45 km/h, making it the ideal companion for long-distance commuting or quick trips between cities.


Extreme power: 100 Nm of pure force

bosch performance line speed 5. gen

The most striking parameter of the new motor is the increase in maximum torque to an impressive 100 Nm. Combined with a maximum support of up to 600%, this means the rider gets up to six times the power they put into the pedals. This power is felt immediately – starts are sporty, dynamic, and the motor doesn't lose its breath even on the steepest climbs.


Technical specifications at a glance:

Model designation BDU388Y (5th generation)
Max. supported speed 45 km/h
Maximum torque 100 Nm
Maximum support 600 %
Nominal / Maximum power 250 W / 750 W
Weight approx. 2.8 kg
Starting behavior Sporty, fast
Hill Hold function Yes
Specific power 268 W/kg
System Smart System


Lightness combined with efficiency

bosch performance line speed

Despite the increase in power, Bosch engineers managed to keep the weight at a very low level. The drive unit weighs approximately 2.8 kg. Thanks to a peak specific power of 268 W/kg, the motor offers an excellent ratio between its weight and the power it provides to the rider. The maximum peak power reaches up to 750 W, ensuring that reaching a speed of 45 km/h is a matter of moments.


Intelligence hidden in the "Smart System"

The BDU388Y model is fully integrated into the Bosch Smart System. This brings a range of digital features:

  • eBike Flow app: Option for individual adjustment of riding modes, navigation, and automatic updates (Over-the-Air).
  • Hill Hold & Hill Start Assist: Features that prevent the bike from accidentally rolling backward on a hill and make starting in difficult terrain easier.
  • Digital protection: The ability to use a smartphone as a digital key to unlock the motor.


Riding characteristics and compatibility

bosch speed 5. gen

The Performance Line Speed is designed for a natural riding feel. Even at high speeds, the motor is quiet, and its disengagement when reaching the 45 km/h limit is smooth. The motor is compatible with both a classic derailleur and a hub gear. Furthermore, with derailleurs, the system features advanced shift detection, which protects the chain and cassette by momentarily adjusting the motor's pull during gear changes.


Who is it for?

bosch speed 5. gen

The Bosch Performance Line Speed (BDU388Y) is intended for demanding users for whom an e-bike is a full-fledged alternative to a car or public transport. Thanks to a combination of a massive 100 Nm torque and smart features, it is one of the most advanced drives on the current market, defining the category of modern S-Pedelecs.