View Full Version : 300ex Pro Curcuit Jet Question T-4
tickman
10-04-2004, 03:20 PM
I Have a Stock 300ex 97 Honda 4 wheeler and just bought a Pro Curcuit T-4 Exhaust for it. I called Procurcuit and they said to leave the jet stock. I was wondering what the factory jet was and how many to go up, if I can or if I have trouble with performance. Also will I fill any difference if before I change air filter to a UNI? Or do change the jet after the air filter change?
< Thanks in advance>
GP400
10-04-2004, 03:28 PM
I don't know the answer to your question, but I called them about my 400ex full system and got two different answers. They first told me 158 & 58?? and then 155 & 55. I currently have a 155 & 50 and am probably going to have to go to a smaller pilot.
Aceman
10-04-2004, 05:06 PM
Stock jetting is : 122 sea level, 120 high altitude
If it was me as soon as you put the pipe and filter on I would at least go up one size and see how it runs.
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