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Jetting advice

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Ok i have had my 2001 cr250r now for a while and i have slowly been adding little things here and there. It has a pro circuit pipe, and v-force reeds. the bike runs awesome however, i am very ocd about it and have read all over about re-jetting i was just wondering if anyone has any advice. i had read in an article "what honda didnt tell you about the 2001 cr250" to go up to a 430 main 32 pilot and a h176 needle to replace the stock 420 main 35 pilot and 173 needle. the only question i have about this is since my bike has these modifications would there be any other jetting advice?..i know i have read that with v-force jetting is not usually needed and the bike runs amazing?

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I had an 01 & remember when that article came out. I tried the jetting they recomended & it ran pretty rich. The mukini will run better with a leaner main jet. The jetting I'd recomend to start off is a 32.5 pilot, s8 nozzzle, 400 main jet with the stock needle in the 3rd pos. & AS between 1 1/2 - 2. Depending on your elev. temp & humidity it will vary a little. I just recently did those settings to a friends bike & it runs crisp through out the powerband. He's also running the PC pipe w/ vforce reeds. You can also buy a jd kit & take the guess work out of it.

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I have a 2001. When I first got it is was jetted as standard and was way too rich. Typically it had little to no bottom end.

I fitted a JD Jetting kit and this made a world of difference. The main changes the kit made were a new needle jet and a new needle. The standard Mikuni needle jet is way too rich.

The bike has not lost any of the top end and now has a reasonable bottom end as well. This has made it a lot easier to ride.

Go for the JD kit it is traight forward to fit and works really well on the Mikuni carburettor.

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Have you pulled your carb apart to see if it still has stock jetting in it? And I think you need to look into adding a flywheel weight....

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