[aleefers]

I am the second owner of an 04 CRF250X I drilled a hole in the exhaust diffuser and now that its winter it bogs and pops all the time. I was going to purchase a jetting kit, I noticed the Dynojet kit is cheaper then the JD, but it seems like everyone likes the JD. Has anyone had success with the dynojet? Also, do the jets have the size written on them so I know what is installed now?

[450X-Man]

For ease of support you should go with the JD kit even though it's a little more expensive. The jet's do have the numbers stamped on the side and the 2 needles have a blue end and a red end with an extra e-clip.