Been out today doing some testing with my buddys Gps I got 79.4 mph on my raptor(sparks pipe,hotcam stage 1,jetted,moose air filter and no airbox lid).My yfz did 77.6 mph(sparks pipe,cam mod, no lid ,jetted).

Both bikes have stock gearing,tire preasure was 7lbs front 6 lbs rear,both bikes.

My buddy put a 15 tooth sprocket on his yfz with my modifyied stock pipe (cam mod,no lid jetted)and ran 76.5mph.

Normally both of my bikes hit the rev limter in top gear but not today.I ran my kids kx 60 and it did 47.7mph

 

cool post thanks for the info.