I have brushed motor mid-drive 38v 450watt- here is a link to the kit
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1


the motor seems to be a very common motor- everything is working great- no complaints
i'm just curious, when it comes time to replace motor I see a lot of similar motors rates at 24 and 36 volts- is the rating more about the controller or is it in the motor windings?


where is a good source of replacement parts for things that will go bad, like the freewheeling crankset, the freewheel on the motor, the unique bottom bracket used in the kit, and the motor itself?