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Kervelo Quartz is the most integrated drivetrain for e-bikes

Quartz is a Gearbox and integrated Electric Motor for e-bikes

Kervelo Quartz consists of Kervelo KERNEL 6 or 12 gears Gearbox and intergrated electric motor. KERNEL coaxial gearbox is Innovative, compact, elegant planetary gearbox with 6 or 12 gears with 323% to 545% ratio!

Kernel-Gearbox for bicycles
Kernel Gearbox for Bicycles and Ebikes

Kernel Bicycle Gearbox from Kervelo

QUARTZ SYSTEM is KERNEL paired with 250 watt Electric Motor

Ebike motor and gearbox

EBIKE GEARBOX

  • optimized drivetrain
  • native integration of electric motor and transmission
  • high reliability with low maintenance
  • light & compact
  • 4, 6 or 12-speed versions

Technical specifications

Quartz-4
Quartz-6
Quartz-12
Gears
4
6
12
Ratios
200%
323%
545%
Max. input torque
250 N.m
External diameter 1
122mm
122mm
130mm
Total width
133mm
133mm
147mm
Weight 2
3.6 Kg
3.7 Kg
4.0 Kg
Motor
Power: 250W
Torque: 70N.m
Voltage: 48V
Battery (option)
48V / 330 WH
Assistance
4 levels
Drive system
Belt or chain
Standard chain sprocket: 24 teeth
Lubricant oil
75W-80
Waterproof & Dustproof
IP65
Crank interface
ISIS
Frame interface
Aluminium EN-AW-6061
or steel 4130 CrMo
1 – Please refer to 3D files for accuracy.

If you are an Ebike builder, this French company is offering 3d files for fitting along with the technical data here

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Written by EvNerds

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