Hows that? Maybe for you! a kg or two lighter, but only a 9 amp battery. Like I said hardly a step up from a Wisper...and a bit like swapping a Ford for a similar Vauxhall OR just changing a car because of the colourEddie if you are after an E-Bike as light as possible then surely the UM44S is a move in the right direction and a Wisper is not...
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