.7-.8mm
it's underneath the gas tank.
.028" is what most race shops go with.
YFZ 450 has 39hp
They are on the top of your battery
70mph
the yfz 450 is not that fastest quad, Its not far from the top but raptors have more top speed. there is no 250 that will stand up to a yfz 450 stock
K&n
2003
YZF 450 puts out 39 hp stock.
Raptor
no. bit the raptor 700 does.