Product Description
he Quartz M stands for urban mobility – now in its technically upgraded version. With hydraulic disc brakes, a precise torque sensor, and smart app integration, the 2026 model is more comfortable, safer, and more intuitive. The sporty trapezoid frame, powerful 48-V rear hub motor with 55 Nm torque, and integrated 483-Wh battery make the Quartz M the perfect everyday e-bike. Available in Metallic Grey.
Efficient drive for everyday use
The 48-V rear hub motor with 250 W and 55 Nm delivers powerful and smooth assistance. Thanks to the new torque sensor, the e-bike responds naturally to your pedal pressure – ideal for starts, hills, and city riding.
Range & flexibility
The elegantly integrated 483-Wh battery offers a range of up to 121 km and can be easily removed for charging – convenient at home or on the go.
More safety in all weather
The hydraulic disc brakes with 180 / 180 mm rotors provide reliable braking performance in dry and wet conditions – with less effort and more control.
Comfortable & practical
Schwalbe Road Cruiser tires with K-Guard puncture protection provide comfort, grip, and reliability on asphalt and gravel. The new double-layer aluminum mudguards protect against splash water and complement the modern frame design.
Clearly visible safety
The powerful 40 Lux (StVZO-certified) front light ensures strong illumination and visibility. It is complemented by the high-quality BÜCHEL Edge (StVZO-certified) rear light for additional everyday safety.
Smart connected
Via the Deruiz Ebike App, the bike connects via Bluetooth to your smartphone, giving you access to range, ride data, and important information at all times.
Frame
Material：Aluminium 6061
Size：One size (44 cm)
Frame type：Trapezoid frame
Fork / Suspension
Suspension fork：Deruiz PAY-PRO 700C, disc brake mount, 60 mm travel, with mechanical lockout
E-Bike system
Motor：Deruiz rear hub motor 95RX.RC / 250 W / 48 V / 55 Nm
Sensor system：Torque sensor with additional cadence detection / 5 assist levels / walk assist
Battery：48 V / 483 Wh battery / range up to 121 km
Display：Deruiz full-color LCD display with Bluetooth
Charger：Deruiz 48 V / 2 A charger
Front light：40 Lux (StVZO certified)
Rear light：BÜCHEL Edge (StVZO certified)
Shifting & brakes
Brake system：Hydraulic disc brakes (180 / 180 mm)
Shifter：Shimano Altus SL-M315-8R Rapidfire
Rear derailleur：Shimano Altus RD-M310 Smart / 8-speed
Cassette：Shimano Acera CS-HG41-8 / 11–32T
Crankset：XR5HA-42 / 42T / 170 mm crank arms
Cockpit
Handlebar：Deruiz comfort bar / 640 mm width / 25° backsweep / 25 mm rise
Stem：Deruiz comfort stem (Ø 31.8 mm) with 30° angle
Grips：Ergonomic rubber grips
Headset：Top ZS 44 / 28.6, Bottom ZS 44 / 30
Wheels
Front hub：Quick release 115 mm, disc brake mount
Rear hub：Integrated Deruiz rear motor
Rims：Double-wall aluminum rims, 700C / 36 holes
Tires：Schwalbe Road Cruiser, 47-622 (28 × 1.75), with K-Guard puncture protection
Equipment
Seatpost：Ø 31.6 × 350 mm / dual-bolt clamp
Saddle：Velo VL-6581
Pedals：FP-803B city pedals, ball bearing, with reflectors
Kickstand：Adjustable side stand
Fenders：Deruiz Urban Style / double-layer aluminum fenders / 58 mm width
Rear rack：Semi-integrated Deruiz rack / load capacity up to 25 kg (ISO 11243:2023)
Additional information
Max total weight (incl. e-bike)：170 kg
Color：Metallic Grey
Net weight：23.5 kg
Gross weight：30.7 kg
Package size：1510 × 250 × 870 mm
