For the 946 Vespa claims 57 mph. At 65 it has just a tad more left in it but when you saw me doing 70 it was because the conditions were right, being behind a semi drafting, slight downhill grade, etc. Yes it was pinned after it was broken in and the first service done switching to full synthetic. The full synthetic slicked it up and I gained an extra 3 mph. The speedo shows about 5 mph faster than reality which is annoying for any bike to me. Yes, Glympse uses GPS off your cell phone so it's fairly accurate with a slight lag by the time the receiver views it.