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FCR MX vs Mikuni Flat slide

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I cannot comment on the mikuni but the FCR-MX carb is a really good proven carb and with the proper jetting turns your bike into a beast.

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From what a I read in this forum the Mikuni is harder to tune. That may be because everyone has done the FCR MX conversion here. I did it as well and i can tell you that it's awesome. Mine isn't even jetting great yet, probably 80% there and the throttle response is insane. Do your homework first - o-ring mod (i used a wire twisty you that you get when you buy new electronics. The one that holds wires folded - it's better, but prob doesnt last as long), jetting, accelerator pump nipple trim, etc. Just on the fact that there's so much more support here on this forum for the FCR, i'd go with it over mikuni. This exact question has also been asked before. Do a search. I haven't seen anyone rave about the mikuni like they do with the FCR

 

 

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schin check out this thread if you want information on jetting the FCR-MX

 

I'm running a 158MJ

42PJ

and NCVT needle 2nd clip from the top

 

put that in your bike and you'll be very close to perfect jetting

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