As far as I'm aware, there is no gap spec listed in any R18 literature. The manual specified NGK plugs are 1.0mm gap out of the box, and as they are plugs made specifically for the bike, I assume that is what they are intended to be. I don't think I've ever had to gap iridium plugs on a modern vehicle, but I don't have a TON of experience on that front to know if that's a thing folks do regularly these days.
Were they pre gapped or did you adjust
As far as I'm aware, there is no gap spec listed in any R18 literature. The manual specified NGK plugs are 1.0mm gap out of the box, and as they are plugs made specifically for the bike, I assume that is what they are intended to be. I don't think I've ever had to gap iridium plugs on a modern vehicle, but I don't have a TON of experience on that front to know if that's a thing folks do regularly these days.