... very free and fluent, better for Li-ion battery and e-bike.Voltage,24V-48VSpecification, 8”-28”Weight ,3KGPower, 50w-5000wEfficiency ... core, DW470Bearing, C&UXF 128motor( front wheel drive) 128 motor( rear wheel drive)128 motor front wheel drive( disc brake)100mm128 ... xinfeng motor co.,ltd , chang zhou city, jiangsu province, china e bike motor kit&80mm E-bike gear motor ...