I would be curious to know what the real top speed is as measured by GPS and not the speedo. Most of the speedo's are 10-20 km/h out at 100, and I'm seriously doubting a 250cc single cylinder bike can pull 140 km/h with stock gearing.

My Yingang 250 indicates 142 km/h on the speedo and that = 121 km/h on GPS.
My QM250 reads 130 km/h on the speedo and that = 120 km/h on GPS.
My Galaxy 250 was pretty accurate at 123 km/h on the speedo = 120 km/h on GPS.

None of the Chinese 250's I've owned have ever hit over 125.

Great stuff Pete...keep it coming.

Cheers!
ChinaV