Originally Posted by fullmonte
Its about 2-3 mph optimistic with the stock countershaft sprocket. With the 15tooth, more like 6-8mph. I keep the gps on the bars for speed accuracy.
That's only for non-ABS. ABS Tigers use the ABS for the speed sensor so you don't get any difference with sprocket changes.
BW, at 80mph on the speedo you are going about 76mph on the GPS.