1 8 Magnet Pedal Assistant Sensor. Rim: Double-wall Aluminium Alloy Rim. Hub Motor: 48V Brushless Non-gear Hub Motor. Rear wheel Bottom bracket: 190mm. This item is in the category "Sporting Goods\Cycling\Electric Bicycles".The seller is "cscbike" and is located in this country: CA. This item can be shipped to Canada.