It will depend upon your bike.
Older vulcans used a mechanical speedometer (a cable runs from the front wheel to the back of the speedometer. I don't know of a way to adjust these. other than changing your tire size (not recommended).
Newer bikes use an electronic speedometer, and for this there is a fix. A little device called Speedohealer. It took a few tries to calibrate, but now my '07 1500 reads dead on. http://www.xtsportbikeaccessories.com/SpeedoHealer_HealTech.html
It reads instantaneous speed, and tells you nothing about average speed.
can you change the 4 speed transmission on a 1994 kawasaki 1500 to a newer 5 speed
215 mph with out speedometer limiter
Unless you have a broken speedometer, you are traveling at 55 mph.
mine does zero to sixty in about 3 secs. do the math
It reads instantaneous speed, and tells you nothing about average speed.
you should be able to top out around 125-130 mph
75mph
The 2007 Kawasaki Vulcan 500 has a 6-speed transmission. This setup allows for a smooth range of gear ratios, providing a good balance of performance and fuel efficiency. It's designed for both highway cruising and city riding.
101.7 kph in a GPS, and 122 kph on analog speedometer
The car's speed is about 225 Km/h
193.1 kph