How long will it be before all motorbikes are governed to 137mph or below 
http://www.cycleworld.com/article.asp?section_id=3&article_id=746

http://www.cycleworld.com/article.asp?section_id=3&article_id=746
The '09 model has one more electro-trick. While outright top speed is governed to 137 mph, the black boxes have been programmed to recognize a dragstrip-style blast through the gears and in that case allow an extra 6 mph—but only for a quarter-mile. Taking that 143 mph as the bike's terminal speed at the strip, then, we can hazard a guess at the E.T. Heavy at a claimed 658 pounds and with a long, 66.9-inch wheelbase, hammering the V-Max off the line won't be a problem, assuming the 200mm rear tire maintains traction. Low 10-second passes should be cake; it'll be interesting to see if those 197 horses (figure 175 at the rear wheel) can overcome the bike's weight to break into the 9s.

, i rekon at least once a month I exceed 150-160, not because I'm some criminal... but because it's just plain fun. if you think <140 is ok, then why not >140, you just can't put figures on safe speeds without taking into consideration variables such as conditions on the road and the type of machine you are driving / riding. i know my bike in the right road conditions is perfectly safe at >150 for me and other road users (ie other road users not there), no problem at all... so I use it at this speed sometimes.
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