The lightweight specialist

The
ultra-light electric motor is unique in terms of aesthetics and
function. Build invisibly into the seatpost, the 200 watt motor works
directly on the crank. Since the motor comes as a retrofit kit you
can install it in nearly every kind of bicycles. You barely even notice
the additional weight of just 1.8 kg for the drive unit including
the battery. Thus the worlds lightest mountainbike under 10 kg was
born. The bike works as normal when the motor is switched off.
Freewheel assembly means there is no resistance and you can continue
to use the bike as sports equipment.