About Kappstein

Kappstein is an engineering company based in Gotha, Germany, specializing in the development and manufacture of high-quality e-bike motors and premium bicycle components.

With a long history in e-bike motor development, the founders of Kappstein worked with several of Europe’s largest bicycle manufacturers in the early 2000s, supplying substantial volumes of drive units. As an early participant in the e-bike sector, Kappstein contributed to the development of the European e-bike industry.

Rather than separating design from manufacturing, the company develops its engineering philosophy through direct practice — combining industry experience with in-house precision machining and applied mechanical research, where concepts are validated through real hardware.

Kappstein develops drivetrain systems, hubs, and gearbox solutions using a first-principle engineering approach that evaluates geometry, load paths, contact mechanics, and system interaction rather than relying on inherited component assumptions. The product portfolio includes Track, MTB, and Gravel Bike chainrings, the compact Doppio two-speed gearbox, and specialized hub systems such as the Mute-Hub, Whisper Hub, and electronically shifted two-speed hub. These components are designed to address specific mechanical limitations in efficiency, durability, and engagement behaviour, and are used by demanding riders and professional teams, particularly in track cycling where stable power transmission and reliability are essential.

Across all developments, Kappstein focuses on purposeful innovation: new component architectures are introduced where measurable performance or service-life improvements can be achieved, while the company’s precision manufacturing capabilities and technical metalworking services support both its own products and specialized external engineering projects.