300ex jetting

[cheesy350]

i just purchased a hmf slip on for my 2003 300ex, its all stock. so i was wandering wat jet sizes to go with.

[ghak99]

I would just go one or 2 sizes bigger, The test ride will tell you all you need to know

[secret sauc002]

i put a full DG exhaust on my 300 and bored it .20 over and went about 3 sizes bigger but when i just added the pipe i went 2 sizes, go with that.

[sbexrider4life]

on my 300 came stock with a 122 and i put on a pipe and rode it with a 125 then added a filter and put in a 128 hope it helps

[darrell43031]

i run a 128 on mine with a full fmf powercore 4 system on it and it's stock

[jay's 300]

Originally posted by sbexrider4life
i put on a pipe and a filter and put in a 128 hope it helps