The central kit excels especially by its light weight and simple installation.The motor assembly is done to the centre of frame instead of pedal. The motor installed in the center of frame, results in optimum center of gravity without limiting riding qualities. The engine is designed for hub axis of 68 - 72 mm.
The 46 cogs on the gear help to achieve higher speeds on a flat road. The central kit has about 35% longer reach than the wheel engine.
Gearsensor can be easily installed to the derailleur string track and connected instead of a brake lever. The gear sensor monitors the move of the string when changing gears and momentarily disconnects the engine in order to achieve comfort and smooth gear change.
Very light motor (only 3.8 kg)
Motor with power 750W, torque 70 Nm (peak 100 Nm)
Quality and well arranged connector cables with IP67 (splashing water and dust)
Possibility to easily change the intensity of pedaling assistance (0-5)
Control unit, pedal assistant and engine is a part of one case (all in one)
eBrake - a brake lever with a brake sensor for higher safety
Possibility to install on 99% of bikes manufactured in serial production
Very quiet operation (<55 dB)
Very easy installation
Walk assistance function (6 km/h)
Real reach with a battery 624Wh (13Ah) up to 140 km
Contents of the box:
motor 48 V, 750W*
Battery 48V 13Ah
Main cable bundle
Speed sensor with a magnet
Gear with 46 cogs with a protective cover
L+R pedal crank
L+R brake lever
Assembly material (screws and nuts)
The reduction of maximum speed up to 25 km/h can be switched off and set up to 60 km/h (off the roads).
*Unit have regulation with maximal input 25A, this result in up to 1200W at 48V and peak motor power at 960W!
Please see the video about the conversion and what is needed for it: