102 hp? Really? From a 550? What magic was used to produce all this extra power? Hmmmmm. I guess the old engineers that designed the old KX and CR 500's must have been total morons. Who knew there was an extra 40 horse in those things.Making an honest extra 10 hp. is monumental. Congratulations for adding 40.
Like others have said I assume it’s race gas 102hp.
As far as 72# and 100 hp goes I think the price is reasonable.
(Assuming it’s legit)
A 600 twin puts out 120 hp easily in pump gas form so it doesn’t sound that far off. (Yes I realize twins have better efficiency)