To order needle jets online:
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Suzuki, rf600 Suzuki, rf900 yes, Mikuni used the same part in both size carbs.... Suz pn: Factory Pro nickel plated replacements in stock
Suzuki, gsxr 1100, gsx600f and others that use 2.5mm series needles in 36mm, horizontally mounted, MIKUNI CV carbs. 3mm series needle jets available, also. Factory Pro nickel plated replacements in stock Suz pn: differing between models
Yamaha, fzr400, 88-90 Yam pn: 1WG-14141-90-00 (discontinued by Yamaha) Factory Pro nickel plated replacements COMING! 06/2006! Due 6 /15/06
Yamaha, fzr600, 89-97 original Yam pn: 3EN-14141-90-00 Factory Pro nickel plated replacements in stock
Yamaha, tdm850, 92-93 Yamaha xtz 750, all years Yamaha yzf750, all years Yamaha fzr1000, all years (but not "ThunderAce") Yam pn: 3GM-14141-90-00 Yam pn: 3GM-14141-92-00 Yam pn: 3GM-14141-94-00   Factory Pro nickel plated replacements in stock Also same part used in Ducati 600, 750 and 900cc bikes. Fits every original Mikuni 38mm downdraft CV carb. In the original carbs, there are tiny differences in the "size", but, if you know what I'm talking about, a Y-2 and a Y-4 are the equiv. of  <1/3mm difference in float height (translate to "insignificant").
Yamaha, fj1100, 84-85 84 Yam pn: 16H-14141-90-00 85 Yam pn:   50h-14141-92-00 Factory Pro nickel plated replacements in stock
Yamaha, fj1200, 89-93 Yam pn: 50H-14941-92-00 Factory Pro nickel plated replacements in stock
To order needle jets direct: click here