[kirchnerdevin]

Hi i have a 2009 250x, and i decided to take the spark arrester and airfilter screen out. Anyone have any advice on what's size jets i should use to make her run nice. ?????

[riddler9]

Sorry to give this reply on your first post - you may hate this response. Best way to go is buy a JD kit. For the jetting alone you could provide your altitude and I (or others) could give you the most common setting. Unfortunately on the '09 you will also need to adjust your needle but Honda felt the need to install a fixed position needle.

The JD kit will come with 2 [adjustable] needles, jets, and instructions for needle and jet settings based on altitude and temp.

[Keith72]

If you search the jetting database in the 250x section you could save yourself the trouble of buying a JD kit and just buy the jets and needle you need.