04 yz450f dispacment

is the 04 yz450f 439cc or is it like the wr and 449cc

449cc. Only the pre-'05 YFZ was 439.

cool my 04 yz450f motor should run very well in my yfz frame then, but i would still like to add a first gear to it though.

You'll need to make custom mounts because the hard points are different, and the electric starter will not interchange.

yah i have already had a custom swingarm made and made new front mounts moved the top one over and cut and rewelded the bottom one and i dont want the electric starter anyway. i have a almost stock yfz the is staying mostly stock anyway. just wanted a project to have fun with.

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