Why is the X1 twice as heavy, as the other similarly sized bikes (1000 vs 2000 kg). Does it have larger components, like a bigger powerplant or bigger main thruster?

With the updated ship stats matrix coming soon all ships will be getting revised mass values and it looks like these values started to sneak out a little early! The website was incorrect to list all three variants with the same weight; they do all weigh different amounts. The Velocity is much closer to the Nox's weight, the base slightly more and then the Force at the upper end of the scale near to the Dragonfly.