9m 12sLenght

http://electricbikereview.com/bionx/d-500/ The BionX D-Series includes this 500 watt gearless motor and 555 watt hour Lithium-ion battery pack. It's wider than most other hub motors and this allows it to climb more easily thanks to mechanical advantage, low end torque. The system can be added to most bicycles that have a downtube water bottle mount and is ideal for hardtail mountain bikes. It is center-spoked so vibration and impact is distributed more naturally and includes a two year warranty. When combined, this kit is referred to as the BionX D 500 DV for downtube and 5th generation extra large battery pack.