Speedo Calibration Devices?

[AZRacer]

Hey guys,
Is there a particular brand of calibration device that you have used with success? My speedo is way off since I changed my front sprocket.
Thanks!

 

[670cc]

I’ve used the 12 O’Clock Labs SpeedoDRD device successfully on a manual transmission NC700X. You can fine tune the output to exactly what you need for correction. The speedometer behaves as normal with no change to the smoothness of the displayed speed. The model specific connector supplied simply goes in line with the speedometer signal wire on top of the transmission on the drive chain side. I tucked the module above the battery in the battery compartment.

 

[Antarius]

On my NC700 and on many other bikes, I've used HealTech's SpeedoHeeler.