I saw MikesXS had BS34 carb parts (for their 1980-84 xs650 models though).

And was just curious if they are interchangable since my 1978 xs400E i believe is the same Mikuni carb model?

Here are the links to their main/pilot jets...

http://www.mikesxs.net/products-38.html#products

http://www.mikesxs.net/products-39.html#products

Also Do you guys usually buy 1 jet size smaller and bigger so you can jet? or it isn't unusually to get 2 sizes bigger/smaller if you re-jetting.

Thanks,

Arian

those jets will fit as they are standard mikuni jets.

as to the sizes, it all depends what you are trying to do.

always best to go richer then down from there.

those jets will fit as they are standard mikuni jets.

as to the sizes, it all depends what you are trying to do.

always best to go richer then down from there.

cool, i just wanted to have backups in case i try anything