For years, Bosch built its reputation around mid-mounted e-bike drive systems. Batteries, motors, ABS technology, and countless supporting components helped turn the company into one of the biggest names in the industry. This time, though, Bosch is moving in a different direction.
The company’s newest addition is called the Hub Line. Unlike the systems most riders associate with the brand, this one places the motor in the wheel hub. The move targets road, urban, and gravel bicycles, areas where low weight and efficiency often matter more than outright output.
Bosch kept the unit compact. The Hub Line weighs only 2.3 kg (5 lbs), and the company says riders and manufacturers will be able to tune the system according to rider preferences. A promotional clip pairs the motor with a PowerTube 360 battery, one of Bosch’s smaller battery packs. Nearby text references a riding range of more than 80 kilometers.
Performance figures reveal the direction Bosch chose. The Hub Line operates with a nominal 250 W output and reaches 400 W at peak. Torque stands at 45 Nm (33 lb-ft). Those numbers sit well below some of Bosch’s better-known mid-drive systems. The Performance Line CX, for example, reaches 120 Nm of torque.
That difference appears intentional. A smaller motor integrates more easily into a bicycle’s structure and leaves room for smaller battery packs. Bosch’s approach also supports slimmer frame designs and reduced overall mass. The result is a package aimed at keeping an e-bike visually close to a traditional bicycle.
There are limits attached to the concept. Bosch positions the Hub Line for road riding, urban use, and terrain where both wheels remain in contact with the ground, including gravel routes. The company also states a top assisted speed of 25 kph (15.5 mph).
Pricing remains absent from Bosch’s website. In fact, individual buyers cannot purchase a Hub Line system on its own. The company’s dealer locator directs visitors toward retailers selling complete bicycles equipped with the technology. At the moment, those dealers appear concentrated across Europe, leaving riders in the United States without direct access for now.
The competitive environment is hardly empty. Electrek previously pointed out how crowded the hub-motor segment has become, with some Chinese manufacturers selling 750 W systems for around $100. Mahle already operates in the same space as well. Its X20 system weighs as little as 3 kg (6.6 lbs), battery included, and generates up to 65 Nm (48 lb-ft) of torque.
Bosch is entering a category where established alternatives already exist. Still, the company is sticking to a familiar strategy. Rather than selling the Hub Line directly to consumers, Bosch plans to work through bicycle manufacturers, integrating the system into complete bikes before those products reach showroom floors.
