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Quartz M: More technology. Same character.
The Quartz M has proven itself to be a reliable company since its introduction. City E-bikes have become established. Lightweight, agile, with a sporty trapezoidal frame that makes getting on and off a breeze in everyday life. Anyone who rides one daily knows why it has been so well received.
That's precisely why we didn't reinvent it – but rather consistently refined it. Quartz The M 2026 was developed through a combination of customer feedback, insights gained from everyday use, and technical advancements. The result: a city bike that retains its character while improving in key areas.
Why the upgrade?
Anyone who rides a bike daily eventually gets to know it very well. Riders have given us feedback on their experiences: brakes that require more confidence in wet conditions; sensors that don't always react as precisely as desired when speeds change; and the desire for a system that treats the battery, motor, and display as a single unit, not as separate components.
At the same time, market demands have changed. What was considered good years ago must be better today – in terms of precision, safety, and system integration. Quartz M 2026 provides concrete answers to these questions.
The tried and tested gets better.
A natural driving feel instead of pure engine power.
For the first time, the Quartz The M is equipped with a precise torque sensor. It measures pedaling force in real time and adjusts the assistance accordingly. Compared to the previous generation, the drive reacts faster, more smoothly, and with greater control – especially at traffic lights, on hills, or when speeds change. The assistance follows the riding rhythm, not the other way around.
Safe braking – in any weather.
The new braking system uses hydraulic disc brakes with 180 mm rotors at the front and rear. Compared to mechanical brakes, this means more braking power with less effort – and significantly more safety in wet, cold, or downhill conditions. An upgrade that's hardly noticeable in quiet city traffic, but counts when it matters most.
A system that thinks for itself.
The 48V rear motor with 55 Nm of torque remains the heart of the Quartz The new feature is the complete integration into the Deruiz e-bike app ecosystem via the proprietary Deruiz protocol. Battery, display, and drive system now communicate with each other in a stable, secure, and updateable manner. The bike evolves with its own software.
Clarity at a glance.
The new color LCD display presents all relevant driving data clearly and concisely – and is fully compatible with future Deruiz systems.
For whom is that Quartz M done?
The Quartz The M is a city bike designed for regular use. Its sporty trapezoidal frame makes getting on and off easy – even with frequent stops and a loaded rack. For daily commuters who rely on precision and dependability, this is a technically advanced bike that avoids unnecessary complexity.
The combination of optimized sensors and improved braking technology makes even challenging routes a breeze. And those who appreciate the sporty look of a trapezoidal frame will find it in a bike that matches its technical specifications.
Same DNA. More possibilities.
The Quartz M remains what it was: an accessible, technically convincing Urban An e-bike with excellent value for money. The 2026 model year upgrades don't change the bike's character – they improve the riding experience in the areas where it matters most.
More sensitive drive. More reliable brakes. More intelligent system integration. That Quartz The M 2026 is the bike you already knew and appreciated – only even better.
Learn more on the product page.
Your Deruiz Operations Team
June 8, 2026
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