137 is the best I've done on the CB, and it was work to get there. Once into triple digits, accelerations gets a little slow. Fastest ever was on my 2007 CBR1000RR at 179mph, and it would get there super easy, but would not pass 179 for nothing. I tried several times, but couldn't pass it. I worked nights at the time, getting off work between 1-3am, and there is a stretch of freeway that is dead arrow straight for quite a few miles, and not many on ramps, and no traffic in the middle of the night. Basically perfect circumstances for top speed runs. I tried so hard to hit 180, just could never do it. Fastest ever in a car was 142mph, same straight section of freeway, a 1992 Toyota MR2 Turbo. Car I have now is faster, but I no longer have anyplace to get a higher top speed haha.