A 350-watt Bafang mid-drive motor (powered by a removable 550Wh battery) is at the heart on the Premiere Edition. It takes advantage of a torque sensor for easy pedal reaction and has a maximum assisted pace of 20mph. Shifting duties are managed by Shimano’s minimal-routine maintenance 8-velocity Alfine inner hub. https://kidsbikes20864.isblog.net/the-smart-trick-of-kids-bikes-that-nobody-is-discussing-45951966