BionX - The eBike World Champions 2015

trex

Esteemed Pedelecer
May 15, 2011
7,703
2,671
Very competent direct drive kit but quite overpriced.
You should note that the D350 (I think that's the one fitted into your Smart 250W) given torque is 40NM max, 10NM nominal.
The Bosch Performance and Yamaha motors have twice that and cost about half the BionX price.

 

flecc

Member
Oct 25, 2006
53,470
30,777
And the A to B link is no longer relevant since almost all the makers listed as using them in their BionX listing have dropped them due to unreliability.

See this post
.