A ) Flat, cruising speed, low torque Hub-Motors. vs B) climbing torque MID drive replacements for the crankset ..
The infamous Motor Doping Motor That that fits down the oversized seat tube of some bikes is a German Product
Posting questioner is German .. .. link seen, it was priced at 2700 Euros ( Not including installation )
Last edited by fietsbob; 03-07-16 at 11:26 AM.