Originally Posted by grayrest

Folding bikes are one of the better bikes for adding electric assist since they tend to be used for transportation and not for sport.

That said, I wouldn't want a Bosch mid drive on my folding bike unless it's way lighter than any Bosch system I've seen on the market. Folding bikes are also meant to be picked up (it's why they fold) and most systems on the market are too heavy to make that comfortable.

I want something like an Ebikemotion X35 in a Birdy. I assume there's enough space in the oversized frame/seat tubes to fit the controller and batteries and a 13.7 kg / 30 lb folder is still a good weight for mixed mode transportation. Plus Birdys are conspicuously the only non-electric in R&M's lineup specifically because Muller thinks they'd be too heavy with the electric system.