Yes, the Enertia uses a standard 420 roller chain.
It has a certain sound to it. It's enough of a roar that it makes you feel like you are on a real vehicle that's actually doing something, but chain noise isn't that loud to the people around you.
Near the end of the video, right as I am pulling into my driveway, you can also hear the forced air cooling fan, which is right on the motor. You can see it in the photo that I took of the rear shock.
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