FMF Poercore 4

Does anyone know if a powercore 4 for a YZF 400 will fit on a 05 Wr 450? I am selling the 99 and was thinking about putting the stock pipe on.

I don't think it will fit anything past a 02 WR426. I pretty sure the 03 450 was different enough so it won't fit. I thought I mention for yuks, that a PC4 off my 01 WR426f fit on my sons 01 yz250f.

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