Since I've been traveling further distances with my Puch in Japan, I needed an odometer to keep track of my mileage (or in my case kilometers).  I also needed to keep track of my speeds since in Japan, the law states the max speed your allowed to go depends on your engine's displacement.  I registered my Maxi as a 75cc because of my Gila kit.  So I'm allowed to go a maximum speed of 60 km/h.  That's only 37.28 mph!!!  If I registered it as a 50cc, I would only be allowed to go a maximum speed of 30 km/h (18.64 mph)!!!