jetting question

[250xrida1290]

Have a 250x and looking for a main jet for running no lid. I was thinking since the stock is a 125 in a 250x (300ex is a 122 stock).I think a 128 for no lid and everything else stock we be good.

Tell me what u think

[250xrida1290]

Anyone know?

[Nrgy]

When I simply ran a filter/vented air lid on my 300ex, I bumped the main jet 1 size up to a 125 from a 122. If 125 is stock on the 250x, then yeah I would try a 128.

[250xrida1290]

Yeah just wanted to see what other people thought. Yeah I'm gona try a 128 main jet and try that...