I got mine up to 163 on sunday and it was only at about 8,500 RPM's in 5th still had plenty of pull left. On another note the '08 ZX10 is faster than a ZX14 and a Busa to 180mph. They also put the 10R's top speed at 184.53 check out the link
http://www.bikeland.org/board/viewth...D=39520&FID=24