Wow! That is some expensive conversion just to extend the bb to 100mm! That's too bad. I might as well buy a new bike with that kind if money. Thanks, Gus, for the info.
I'm interested in the Bafang BBS-02, however I'm wondering, can I use my own crankset? I find that the one supplied with the Bafang kit is too high (teeth). I would like to use something like a 39T.