If you are looking for the differential axle kit as well, please check the item#304254186299

Brand New

16 tooth Drive axle

48v 500w motor:  3000rpm   rated current: 15ah, max discharging time : 160mins      High Speed: 13mph Medium Speed: 10mph Low Speed: 8mph  ( under the load of 143lbs, and the weight of the bike is 154lbs)

Gear Ratio: 9.5:1     Torque:  1.8Nm

The 48v 1000w motor :  4800rpm   rated current: 18-35ah, max discharging time : 140mins      High Speed : 20mph , Medium Speed : 16mph , Low Speed: 10mph  ( under the load of 198lbs, and the weight of the bike is 154lbs)

Gear Ratio: 9.5:1     Torque:  2.62Nm

For the instruction video, please check this link

https://youtu.be/RoZE1SYAxHo