When you change your rims, or tires, or diff, your speedometer usually doesn't read as accurately as it used to. Sometimes this isn't a big deal, sometimes it is - certainly, the nice policeman doesn't want to hear about how all the mods you've made have thrown off your speedo!
We now offer a small, easy to use module that wires in between your speed sensor and the speedometer, and allows correction to put the readout back where it should be. Using a single multi-turn pot, stepless adjustment can be made from 2.5% to 250% of the input frequency. Calibration test points inside the housing allow the use of a multimeter to quickly dial-in the adjustment.
The Speedo Corrector will sell for $60, and can be ordered here