US$ 21.75
voilamart electric bicycle Amazon.com : 48V 1000W Conversion Kit 26IN Ebike 100mm Front Hub Motor Wheel Conversion Kit for Turn Pedal Bicycle Into Ebike (26IN Front Wheel with LCD) : Sports & amazon_color:WHITE 200cc Triciclo Tricycle Rear Models (all sub models):Trek Sole Ride
200cc Triciclo Tricycle Rear Axle Conversion Kit Differential; Trike Conversion Kit For Bicycle (part 1/2)
Features include: a two-chain drive system to eliminate the need for tire-driving rollers and a more efficient interconnection between the motor and each of 7 pedal gear ratios (like a car's transmission gears connect with the motor)
amazon_color:WHITE
Models (all sub models):Trek Sole Ride
The smaller sizes of M and L weigh 2.88 kg, which is too heavy for leisure hikers
US$ 21.75
US$ 28.36
US$ 20.29