Needles for Keihin CarburetorsRICHEST TO LEANER: JJF,JJG,JJH,JJJ,JJKMost common needle change is to a JJH which helps with 90cc engines with 30mm carbs - Helps clean up that hesitation due to rich stock needleJJF and JJG maybe required for reverse intakes to help fuel supply needed by the reverse/air box set up
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