I don't know we went up some inclines without a problem. I would think one with the extra gearing and electric motor would climb a pretty steep incline without much trouble. I am just guessing since I only road one for a day. The one I road didn't have the electic motor or gears. I did see some of the three wheeled one running around and they seemed to be harder to pedal. Well unless us senior citizens were in better shape than the 20 and 30 year olds on the three wheel ones. For some reason the young people seemed to gravitate to the three wheeled sporty one and the old folks went for the four wheel old car looking ones.
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