I agree that they are probably inflated numbers either way...but I still think the numbers they posted were ORIGINALLY KPH as supplied by the manufacturer or whoever tested them overseas when they first came out...
For example...if the Hurricane XP is stated as reaching speeds of up to 70-80 MPH.....well...1 KPH = .62 MPH...so...putting those numbers in KPH terms that works out to 43.4-49.6 MPH...now THAT I would definitely believe...depending on weather...elevation...tuning...type of fuel...etc...
But yes....we WILL get my helper down here with his cruiser and clock this BIOTCH one of these days soon.
...but I will reitterate that it won't be a true "out of the box" test due to the fact that I have put a higher perf engine in...but it should give us a pretty good idea.