Rubbee X, electric bike conversion kit

The Rubbee X kit converts a conventional push bike into an electric bicycle by harnessing the wheels’ friction to give extra pedal power. It is portable, one of the easiest to install and the most affordable on the market at just 580 euros. The Rubbee X attaches to the seat post and is adjusted so that its bearing rubs against the rear wheel tyre. All you need to do is install the wireless cadence sensor and engage pedal assist at the touch
of a button.