Nice bike. I'm considering buying one and doing this to it.
https://www.youtube.com/watch?v=bM0WiGUEImQ Rally Raid kit. Does the bike cruise at 140kmh on the highway?......I mean does it do the speed limit and nothing more
The bike will top out at about 170 kph and gets up to 140 pretty quick. You could ride it at 140 on the freeway as long as you want but all things considered you probably wouldn't want to for very long - the limiting factors being speeding tickets and wind blast. I found that after a few hours on the freeway I have to be careful to keep the speed under 130 (don't like speeding tickets) and you can ride it all day long between 120 and 130. I've done some fairly long tours on mine going over 600 miles on some days and the bike is so smooth fatigue is minimal.
Where this bike shines is on twisty backroads where it's like riding a roller coaster. I've owned over 3 dozen bikes and this one is the most versatile of them all, and one of the most, if not the most, fun to ride.
There is quite a bit of info on the bike, including the rally raid kit, on Advrider. Check it out here:
http://advrider.com/index.php?threads/honda-cb500x.840842/
I've had mine for just over a year and have about 28,000 km on it right now. I've ridden it on freeways for hours on end, through the Nevada deserts and over the California mountains and back roads, taken it up obscure decommissioned FSRs (box stock except for a SW Motechs skid plate) and it seems no matter where I ride it the bike is up to the task. If it were lost or stolen I'd buy another one in a heartbeat.
John