Convert old Kalkhoff Impulse 2.0 or Panasonic to Bosch

[David Jacalone]

I have two Kalkhoff, 2010 Pro Connect and 2016 Sahel w Impulse 2.0. Both have Internal 8 hubs. No issues. However, I would like more power. My wife’s Gazelle has a Bosch Performance Line that I can’t keep up with. 2 mph easy advantage. Internal hub as well. Anyone made upgrades/conversions?