Is it just running out of puff, or hitting the limiter? Gearing can help.
I don't want to know the details, but your weight and size will be a massive factor. Put a 40kg person on the bike and it may make 100 for the KTM spec sheet... Also your riding kit - baggy clothing can slow it down, how you sit (upright or melted into the tank?) and then you are into the little things like humidity of the day, altitude, temp....
My Honda Dominator would do 85 if I rung its neck, and ideally a back wind to help... Just shows - it'd have never ever done 100 like Nords so I suspect I ate more pies...