GRUBER Assist is invisible

In addition to its technical features, a bicycle should also be visually appealing. GRUBER Assist is designed in such a way that it can be invisibly built into every conventional bicycle frame which has a seat tube inner diameter of 31.6 mm or 30.9 mm. The battery is placed in a conventional saddlebag. Apart from the on/off push-button on the handbar, you cannot see any part of the auxiliary drive.

GRUBER Assist is ultra light

Sizing the driving power in such a way to obtain the desired health benefit, in combination with the patented electronic control has made it possible to design an auxiliary drive for bicycles with unrivalled lightness. The motor-transmission combination weighs no more than 900g! A complete bicycle weights about 12-14 kg and weights so app. 10 kg less than other E-Bikes.