> But the latter style (a.k.a. mid-drive) demands custom frames (because mid-drive motors are nonstandardized), This is somewhat overstated. Bafang middrive co

> But the latter style (a.k.a. mid-drive) demands custom frames (because mid-drive motors are nonstandardized), This is somewhat overstated. Bafang middrive conversions fit on most frames with a BSA bottom bracket.