Hmm. Hardly can justify any sound coming from Youtube but it should be loud enough to ring your neighbors at 2-3am. A friend of mine said, in the dead silence morning 1am, he still can hear my exhaust 600m away to tell that I dont rev the engine.

Just got back from a return trip of 200km+. Pumped ron97 BHP RM19, about 9 liter something and it took away like 90%. Rev limited to 6k rpm in top gear and occasionally 5k rpm in 4th and 5th gear. Average speed 90kmh, max speed 120kmh. So heads up for those who want to have Kawasaki Vulcan S, full tank maybe you can do 300km but I'd rather be safe juat to put max 250km for a full tank minus the last bar.

Also highly recommended to use full face or modular helmet and freaking earplug because the exhaust maybe too loud if you have custom like mine. For modular helmet, recommend Lazer Monaco full carbon, Schuberth C3 pro, SHARK Evoline 3 or anything that fits your budget. I am currently riding with half helmet on, not a good experience as the wind will push it out of place.