Voltage:24 36 48v Design:Brushless Wattage:201 - 300w product name:CZJB JB-92Q 36v 250w price small electric wheel hub bike motor rated power:180-350w Front rear:front wheel size:16"-28 rated speed:25km h rated efficiency:>=82% weight:2.8kg open size:100mm surface:black silver shining noise: