BAFANG 36V 500W Mid Drive Conversion Kit Electric Bicycle Mid Motor Kit E-Bike for Adults Cycling for Road Bikes… Price: $449.99 (as of 22/01/2022 12:24 PST- Details)

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Powerful: High starting torque, Max torque≥100Nm, good performance on climbing. Gets you cruising up to 25mph or higher when at max power. Two working models: E-bike & Assisted bicycle, you can choose the E-bike to enjoy a long time travel, and also exercise.
Safety: Double clutch is used on drive unit, more safety. Speed sensor and torque sensor can be applied, controller integerated. High efficiency, low consumption, long travel mileage.