E-bike Sprocket and Lockring E-bike Drivetrain E-Bike - Parts TQ-Systems Bike A history of innovation and quality that has allowed us to set the highest possible standards in the development of the lightest, quietest and smallest e-bike systems in their respective category. Complete e-bike systems and connectivity solutions enable a new generation of bikes defined by riding experience, not numbers. TQ leverages more than 10 years in-house experience in developing and manufacturing e-bike drive systems powered by patented Harmonic-Pin Ring technology, electronics and sensors designed specifically for the cycling application. The combination of a long history of developing electronics and mechanical engineering for space applications allows us to offer comprehensive expertise in all components of the e-bike system: from the drive unit, battery, display and remote control to the software and solutions of IoT connectivity such as consumer-facing mobile apps.