Hi
@goncallf
The Triumph stats are measured at the crack with the engine in a test rig on a bench in optimum conditions. The stats you get from a Dyno are measured at the rear wheel. You get at least 10% loss in the drive train. If you add 10% to the figures that is getting more towards what would be an equivalent to the Triumph measurement.
I'm not sure if my VIN is higher than 482857. The VIN that separates the older Roadster with the one where the map changes is 574812, in which case my VIN is up to 574812.