The Turbo was created by choosing the best and most powerful rear-hub motor available, and then customizing and redesigning it for the bike's precise demands.

ENGADGET: Specialized Turbo e-bike reaches the US, offers a speed boost for $5,900

She excitedly speaks of the smart ebike, a bicycle with a 250-watt electric hub motor in its rear wheel, launching as part of a pilot program in 2013.

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