Jetting Question for 300ex

[dabkrk45]

I have a 300ex with a wb e-series exhaust, and a Mikuni Flatside carburetor i was wondering if anyone else has the same set-up and what to jet the carb as?

[sprtrx300ex]

Im not exactly sure about what size jets to run for that pipe. Your elevation temp etc affect this. I have a K&N power kit that I can sell you that has a wide variety of jets to try, along with a K&N high-Flow airfilter Cleaning solution, etc.

Let me know

[dabkrk45]

what are the sizes on the jets that you got main jets and pilots?

Mine came with a 155 main jet in it, so i think i need a bigger one right?

how much for the jets?

[sprtrx300ex]

Im not quiet sure about the jet size ou need, but Im running a 155 in my 400ex, so I think your a little rich for a 300ex.

The kit comes with sizes 106-128 in 2's. No pilots. It comes with the needle and e-clip for it. For the whole kit I'd like to get $70 shipped

[dabkrk45]

well then i dont know what jet i need at all b/c the carb came with the 155 main in it, so i will just buy alot of jets and try everything to figure it out
But thanks for the help

[sprtrx300ex]

No prob.

[RideRedEX]

i have a 300ex bored .80 over with cam, fmf pipe, k&n filter and have a white brothers 32mm Mikuni flat slide carb.the jets that came with my kit were 180, 190, and 200 main a 20, 22.5, and a 25 pilot, 6f9 needle and 4.0 slide

[bradley300]

have you ridden it yet? if you ride it and describe what the motor does at different throttle positions, we can help you out a lot more