I decided I didn't want the kilometers reading on my speedometer so I got rid of them: I like how much cleaner it is. I just cut some black vinyl in a semi-circle and stuck it over the top reflector source for the gauges. Voila - instant blackout of the center portion of the speedo. You can use black tape or anything dark, the less-reflective the better. It's quick to do and easily reversible if you decide you don't want it later on.