I install a 750watt Bafang Geared Hub Motor from Electro Bike World into my 2018 Rad Rover. Here are Links to the parts. I am an Amazon Associate so some links will take you to Amazon.
Bafang 750w Motor from Electrobikeworld.com https://electrobikeworld.com/products...

(amazon) Tamper Resistant Star Bits: https://amzn.to/3gCO4Qo

my website: www.ridewithcitizen.com