Keihin

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  Keihin N424-52 Series Leak Jet

  Peter in VA

  Does what its supposed to

  It did what it was supposed to but it wasnt for me. I felt it took a lot of the overrev out of the yz250x - too lean up top and didnt help with the fouling issues. Still gonna rate it good because it did exactly what it was supposed to just no #40 for me.

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  Keihin N424-25B Series Pilot Jet

  Michael in CA

  Pilot jet

  Works as intended. No issues.

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  Keihin 99101-393 Series Main Jet

  John in PA

  Keihin 99101-393 Series Main Jet

  Keihin 99101-393 Series Main Jet is a great upgrade for my CRF's BBR Big Bore kit.

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  Keihin 99101-116 Series Main Jet

  Ryan in KS

  not bad

  much like the keihin pilot jets the only complaint I have is price. Still did the job like it should after a pipe and filter upgrade.

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