100 by speedo. but not sure really ,on my 06 500R ,still working my nerve up to see how much it dose have!
I still have not toped it out yet , but was hitting 120-125 indicated ,guessing somewhere around 110-115 actual ,was not much throttle left ,it really gets crappy MPG at these speeds :-[ had it up there for 15 - 20 mins. on interstate the other week following a little BMW car it was surprising it still had a little power at that speed though!