the main jet sizes vary because there a few of them but i hope this link will help
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.
Stock main jet on the 2004 yfz 450 is 158.
120 main jet on a 28mm carb
230
80
170
310 is your stock main jet on a 2000 mach z 800 triple. Bugs
125 front main 140 rear main
I had the same question for my 1999 FXDX. I called Harley customer service and they looked it up and told me a 42 pilot jet and a 185 main jet. This is for non California bikes.
main jet ist 145
JET,MAIN #230137-14143-46-A1 (replaces 137-14143-46-00) this is what was stock.
105 for the main on my two 1988 Bravo's.