300ex jet?

[AtvMxRider]

What size jets come in a 2006 300ex?

[300ex_#387]

I know the main jet is a 122.

[bwamos]

Depends on location.. but at standard elevation.

122 Keihin
38 Pilot
3rd slot on needle
2.5 turns out

[AtvMxRider]

Originally posted by bwamos
Depends on location.. but at standard elevation.

122 Keihin
38 Pilot
3rd slot on needle
2.5 turns out


check your pms

[AtvMxRider]

What jets with a sparks pipe,uni filter and no lid?

[Cody_300ex]

I would reccomend a 128 MJ and if its a little to rich for your elavation slide the needle clip up one.

[Sjorge450R]

Originally posted by Cody_300ex
I would reccomend a 128 MJ and if its a little to rich for your elavation slide the needle clip up one.

yeah but back when i was at that setup (diff pipe) I was running a 124DJ. So I would say try the 128Keihin jet and then try a 130

[300exOH]

Originally posted by AtvMxRider
What jets with a sparks pipe,uni filter and no lid?

Sparks recommends a 135 main, 42 pilot, needle at the stock position and the fuel screw at 1.5-2.5 turns out from lightly seated at sea level.

[Cody_300ex]

Originally posted by 300exOH
Sparks recommends a 135 main, 42 pilot, needle at the stock position and the fuel screw at 1.5-2.5 turns out from lightly seated at sea level.

Wow a 135? A friend of mine has a full HMF, no lid and a .040 11:1 comp piston and its still a little rich.

[300exOH]

Originally posted by Cody_300ex
Wow a 135? A friend of mine has a full HMF, no lid and a .040 11:1 comp piston and its still a little rich.

That's what they told me over the phone when I bought my pipe. It used to be on their site under tech tips for the 300ex but I'm not sure it's still there since they changed their site. I've been running the 135 for a couple of years and it seems near perfect for most weather conditions where I ride and I haven't had any fouled plugs yet either.