I ordered mine from EBR the first go to make sure I had the right thing, not a stupid amount more expensive than other suppliers and I knew it was the right stuff. Turns out the chain is the same type my Honda dirtbike uses, just with a riveted link.
44T is WAY better than stock on the street, you don't have to feather the clutch up to 25-30mph and 6th gear actually gets used. I get that people like the idea of a "race" vehicle on the road, I certainly do. But too often manufacturers go too far on the wrong item trying to demonstrate the "race" aspect. I bought a ZL1 Camaro, it came with track tires that would spin like like you were driving in snow if the tem was below 75 - 80 deg out, usable tires would have been better with the track tires as an option. Same with this bike being geared for the track, 44T should have been stock with 39T as an option. For both vehicles I cited, the vast majority are street driven primarily.