Prediction: anyone trying to Use those HP, torque specs - will soon be a spec(k).

Seems to be primarily a sculpture ~ the way I think of Hogs of all stripes, though some of those have paintwork from masters.

But then, we handling snobs - with a clean sheet of paper - would likely opt for 325-350# max, and whatever exotic alloys get you there with an adequate say, 5#/HP, including the ummm rider.

Fortunately, I lack the funds to proceed from this formula, but I recall in the Norton days.. one morning's lovely ride on a new Manx 30M. From that (and other comparative rides on lighter machines of the era) I concluded that WEIGHT is always BAD for complex maneuvers of any kind. And since cycling is about your moving your CG relative to the machine's: I called that an earliest QED.

(Bonus: on a lighter machine, a less than world-class rider (who likely got first moto at age 3) -- your chances of surviving an error are lots better than on any behemoth.)

But the Monsters are sorta fun, except the Harley Monsters - lineage (like your example, too) from Trucks; however tarted-up, they remain lousy-clearance 2-wheel-Trucks. Entirely appropriate that these would snare the new Murican class of 'motorcyclists' - fondly remembering their (father's?) 5000# Buicks.

I think.. {sob} It's Over.
No (few) places left to play.
Oh well.