KZ550 Speed and RPM Calculator
BACK TO HOME
Lou D 12/5/2008. Last updated 1/11/11

This program calculates the speed and RPM for Kawasaki KZ550 / KZ500 / ZX550 based four-cylinder motorcycles (this does not include the KZ400 four-cylinder motorcycles). The calculations are based on user-entered values for the gear, sprockets, and rear-tire circumference. There are only some limit checks so errors may occur if user-entered values are not realistic. (My Dunlop GT501 120-90-18" measured 80.4" in circumference.) The output changes color, alternating red or green each time a change is made to the input values.

If there are no visible speed or RPM values (in red or green text), the program is not running. This may be due to security settings on Internet Explorer. Downloading this .html file, then changing the filename from GPZspeedAndRpmCalculator.html to GPZspeedAndRpmCalculator.hta should allow it to run, at least on a Windows machine running Internet Explorer.

Select Gear : 1st 2nd 3rd 4th 5th 6th

Select Front Sprocket : 14 15 16 17 18

Select Rear Sprocket : 36 37 38 39 40 41 42 44 For Crazy YZ builders.

Select mph or kph : mph kph

Change rear tire circumference --->

Here is a quick calculator for individual speeds and RPMs.
BACK TO HOME