Most of what I know about RAs is from the classic version, which is five-speed. Top is so short there that it actually limits the top speed to about 125 at 7200rpm or so. I think the later new-age RAs have six gears, with six being a long cruising gear. Bearing mind that the bug-eye six speed has top speeds of:
1st = 29
2nd = 59
3rd = 84
4th = 96
5th = 128
then it's closer than that. I believe weight loss is in the region of fifty kilos, but don't quote me. 0-60 is down, but I'm not sure how much. Top speed would be a little higher (I think there's a little more power), but it's the acceleration that you would notice.
M