Modular cargo E-trike 250 W / 36 V rear-wheel hub motor
Wheel: 20" front and 26" rear
Frame: N/A
Colour: Grey/White
Braking system:
Front: 90 mm Sturmey Archer drum brakes with synchronous braking system for both front wheels
Rear: Cable disc brake
More details can be found here : XYZ CARGO TRIKE — Modular Cargo Bike by N55 & Till Wolfer