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cj1371

yzf450 header

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First, just wanna say thanks to everyone. So many people have made my change to 4 strokes easier. Now my question. The header on my 03 yz450f is jacked. Will a header from an '04 yz250f work? I know this sounds stupid, I would imagine that the 450's header is bigger, but a guy at the track actually said it would work. Thanks again

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Hi, to my knowledge at least the diameter for the canister is larger on 450 header and filling up the gap is gonna give leaking troubles if u use 250 header. Can somebody confirm?

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