well i drove by my friend yz250 that tops at 95 and i past him at a pretty good rate
so i say 105-110 stock. buy the way if you wont one good luck Holden on and pump some weights because they beet ya up
try 80-85
No, but it helps
16.0 mm.
about 90 mph
0.024
Around 90 mph.
This ratio is 40:1.
Go with the 450, I had an 06 250r, sold it and got a 07450r the power difference is immense, and the only difference in weight is about 30 pounds. You'll be much happier having the power there.
2007 CR250R and a 2010 CRF450R
Around 80-85 pounds of torque.
50:1 mixture
20/50 or 20/30
.024- .028 thousandths of an inch