kx250 jetting

[mcoker]

Hi, I just got a KX250 and have done some modifications to it, and am looking to re-jet it. I've got an FMF torque pipe on it and turbine core2 silencer. Everything else is pretty much stock.
In the KDX forum (I also have a KDX) everyone listed their mods, location and what jets they were running, needle size/position and air screw position... and it benefited a lot of people, including me. I took the average jets everyone was running and used that as a baseline to fine tune my own jetting.
So what about you guys with kx250's?

 

[Matt_H]

What year is it?

 

[mcoker]

Mine is a '99

 

[Senior KX Rider]

There are so many variables to consider(fuel, temp, altitude,modifications) that the best thing to do on that bike is use stock jetting as your baseline. Without the big bore, pipe, v-force, and MR2 fuel my bike was about right with the stock pilot, a little fat on the needle and about right on the main.

 

[Senior KX Rider]

There are so many variables to consider(fuel, temp, altitude,modifications) that the best thing to do on that bike is use stock jetting as your baseline. Without the big bore, pipe, v-force, and MR2 fuel my bike was about right with the stock pilot, a little fat on the needle and about right on the main.