Unrestricted Speedometer Gauge

I have a 1981 KZ550 A2 with a speedometer that gives me a "top speed" of 80 miles an hour. I know it's wrong; you know it's wrong...

I figured that out there, there must be a correct speedometer I can buy that goes to a higher top speed so as to truly know its limits.

Can anyone help me find such a thing?

Thanks,

Gabe

Maybe the bike salvage yards:

www.cycle-salvage.com
www.motorcycle-recycle-center.com/
www.newrivercyclesalvage.com/index.html
www.bornagainbikes.net/
www.motolane.com/


Try these websites too:
www.oldkawman.com
www.redlinecycle.com
www.sudco.com
www.americanclassix.com