If your ACTUAL top speed is 110 kph (68mph), I recommend changing the belt whether it LOOKS good or not. I read that sometimes they stretch. So they might be the correct width, but the extra length will lower your top speed and raise the rpm's throughout the entire range. Might as well change the rollers too while you are in there. As I stated earlier, my scooter had similar mileage as yours when I bought it. And about 1500 miles later, my belt broke suddenly and without warning.
When I replaced it, my top speed increased to nearly 80 mph. With the original belt and rollers, it was about 71 mph at approximately 8500 rpm with the engine rev limiter kicking in. Now it is only limited by wind and road resistance. The rpm's are about 8300 at max speed. By the way, my speeds are GPS verified. My speedometer is also slightly off. When it reads 70 mph, I'm actually doing 66-67 mph.
