Top speed? I was thinking curves in my previous post.
2-Up speed is probably 120ish with Little Taz on the back, by myself 160+ on an RF900.
Without a faring to hide behind, 150 +/- 5. That was on a vintage race bike that didn't have a speedo, so it is a calculated guess based on RPM/Gearing/tire dia etc. It was a 1000cc Triple Super-Bike at Road Atlanta before the changes to the back straight. Popping over the hill and down into the cavity was a real attention getter...