Gross vehicle weight = bike + rider.

50bs + 180lbs = 230lbs
200lbs + 180lbs = 380lbs

yeah, that's a lot more, but not EVEN 2x as much. It's only 150lbs more gross weight over 230lbs of the DH bike. That's only 65% more gross weight. If you take into account the gear, MX gear and DH gear is about the same. Say 15lbs of helmet, boots, pads, goggles, jerseys and whatnot and the difference shrinks even more 250lbs versus 400lbs. That's just 60% more for the MX-er over the DH-er.

But then again I'm "totally wrong."

You're right, what was I thinking...