99 Yzf 400 exhaust Does it fit 2001 yzf426

I'll put it this way ....an '01 YZ426 exhaust fits a '99 YZ400, so you should be fine.

Need an answer quick if anybody knows...

Yes, FMF uses the same part number for both the 99YZ400 and the 2001 YZ426. The stock pipe will fit.

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