yz426f and yz450f interchangable parts

hi, will a yz450f cylinder head fit a 2002 yz426f

No it won't.

i mean the head assembly that hold the cams and valves etc

I knew that. And it still won't fit.

you could always just do a big bore kit, cost around 500 bucks and itll get you to about 444cc, just a thought

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