With the 2026 model year, we have Quartz M has been further developed in areas that make a difference in everyday life: braking performance under poor conditions, drive precision at changing speeds and the smart networking of all system components.
The 48V rear motor with 250W and 55Nm delivers confident assistance in every situation. New features include a torque sensor for a more natural motor response and hydraulic disc brakes with 180mm rotors for increased safety and reduced effort. The Deruiz e-bike app connects the battery, drive system, and display into a cohesive system.










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