HOME About Us
About Us

About Us


Karmina – A KH Gears Brand
With 30 years of expertise in the drivetrain field, KHGears combines rich experience and harmonic gear technology in the design of Karmina's mid-drive motor. This innovative motor offers not only improved concealment within the bike frame but also a lightweight, compact design with enhanced torque. Experience comfortable rides and unique frame designs, as every Karmina model stands out with our commitment to excellence.


KHGears incorporates harmonic gear and modular design, seamlessly integrating the system within the downtube. The downtube motor system offers high efficiency, transmission ratio, and precision, resulting in extended lifespan, increased mileage, and smoother rides.

The downtube design enhances the aesthetics of electric bicycles, enabling more streamlined frame designs. The modular design also simplifies and expedites maintenance procedures.