This company has 125cc and 50cc kits, both designed to replicate the existing gas engine performance.
micromobility - Bikes, scooters, boards: Whatever floats your goat, this is micromobility
Ebikes, bicycles, scooters, skateboards, longboards, eboards, motorcycles, skates, unicycles, heelies, or an office chair: Whatever floats your goat, this is all things micromobility!
"Transportation using lightweight vehicles such as bicycles or scooters, especially electric ones that may be borrowed as part of a self-service rental program in which people rent vehicles for short-term use within a town or city.
micromobility is seen as a potential solution to moving people more efficiently around cities"
Feel free to also check out
It's a little sad that we need to actually say this, but:
Don't be an asshole or you will be permanently banned.
Respectful debate is totally OK, criticizing a product is fine, but being verbally abusive will not be tolerated.
Focus on discussing the idea, not attacking the person.
Pedelec sells kits too https://www.pedelecs.co.uk/forum/threads/diy-electric-moped.41270/ if you're in their market
Looks like there are some on Alibaba as well, but I can't speak to the quality.
There's another discussion about them on an old forum that might help: https://www.mopedarmy.com/forums/read.php?1,4640986