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Stock main jet on the 2004 yfz 450 is 158.
230
JET,MAIN #230137-14143-46-A1 (replaces 137-14143-46-00) this is what was stock.
The stock main jet size for a Suzuki TS 125 varies depending on the year of the bike and the specific model. It is recommended to consult the owner's manual or a Suzuki dealership to get the accurate main jet size for your TS 125.
130 small round
105 for the main on my two 1988 Bravo's.
310 is your stock main jet on a 2000 mach z 800 triple. Bugs
primary jet size 105 secondary jet size 150
165, if you run boyesen reeds its 160-162
120main 38pilot
80 100
is that the only mod done to this quad? if so then i recommend getting a kit and changing the main to 280 then doing a plug chop. most likely you will need to lower it a size or to to about a 270 with the needle in the 4th position. stock main jet is a 240