I've see folks selling their guages with 5k miles on them and such. I just pretty much made the assumption that if you wanted you could buy a gauge off a different bike and replace yours to skirt actual mileage.
That said, I am sure upon inspection at a dealer they would notice it, but by then you may not be able to find the orignal owner who pulled the scam.
Is this your stunt bike? Cause if so, wouldnt the gearing throw the mileage off big time anyways kinda like the speedo? I have no knowledge of this sort of thing but thought it might...