Will the bike need to climb hills or will it be used on relatively flat ground only?
If the bike will need to go up hills, do you need to achieve a minimum speed of 70km/hr while going up hills, or is it okay for the bike to slow down when going up hills?
For relatively flat ground our 60 Volt 2000 Watt motor would have enough power for a 70km/hr top speed. For a 100km range on flat ground, a 40Ah battery pack is recommended.
Yes, since you are interested in LiFePO4 batteries I was referring to a 60 Volt 40Ah LiFePO4 battery or battery pack.
We carry a 60 Volt 2000 Watt brushless motor which is our item # MOT-602000BLDC and is available on this page: https://electricscooterparts.com/motors60volt.html
Our 60 Volt 2000 Watt brushless motors arrived before our 60 Volt 2000 Watt brushless motor controllers did so they are not in stock yet, however, they will be in stock in a few weeks and will be available on this page: https://electricscooterparts.com/speedcontrollers60volt.html
We do not carry 60 Volt 40Ah batteries or battery packs so that part would need to be sourced from a different store. We do carry many other parts needed for the electrical system though such as throttles, switches, fuses, circuit breakers, wires, connectors, chain, sprockets, etc.
Please let us know if you have any questions.
We do not have any suggestions for where to purchase the batteries. We could, of course, find sources for them online, however, we do not want to recommend battery sellers that we do not have experience with.