Heck, I think most direct drive MB's are fine with 410 chain, Skyhawks came that for years.
Shifter use even thinner 7-speed chain and for the most part with proper shifting technique hold up.
I find 415 chain overkill but deal with it because of stock sprocket width and #41 to be just silly, like a tanker anchor chain on a dingy.
OK in a pinch or when dealing with a big engine (got a 79cc pred with Q-matic that demands a 41 in the bay), but otherwise just wasted weight and noise.
In my option and we would be much better off if engine kits got back to HD 410 sprocket widths for everything.
Having to grind covers and such just to fit a chain that is bigger than needed is just plain silly.