Guys, If I can ask a question,
I have this bike I want to add a Bafang 02 motor to, it has 21 sp 3x7,
that I would prefer to keep, I like pedaling this lite weight bike.

There plenty of room to mount the motor, and keep the folding aspects,
can I still keep the 21 speeds?

The 48v 17.5 a battery will fit on the down tube just upstream from the motor.
See more info on this bike here:
https://www.montaguebikes.com/cx-com...ing-bike-2009/

Thoughts or suggestions,
Tia