... , easy adjustment of speed, 3) sample available, 250W electric bike motor MY1018 ModelMY1018Specification250W 24V/36V350W 24V/36V450W 24V/36Vunload ... Linked side installation, comes with heat shield outside electric bicycle motor with built-in gear reduction transmission. Gear ... 1/8" bicycle chain. Powerful four brush permanent magnet electric motor design. 100% ball bearing construction. 24" long ...