'01 426 -- FMF Power Core IV & stock header


5 replies to this topic
  • RandAybarra

Posted February 23, 2014 - 04:07 PM

#1

2001 YZ426-- Anyone know if an FMF Power Core IV exhaust will fit onto the stock header? I've done some sleuthing but can't seem to find an answer.

Thanks!

  • tang426

Posted February 23, 2014 - 04:43 PM

#2

Yes I have one if you need. Too loud for me

  • RandAybarra

Posted February 23, 2014 - 09:06 PM

#3

Thanks. I ordered one from eBay yesterday. If I have any trouble with it, I may take you up on yours.

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  • redogg323

Posted February 26, 2014 - 04:45 PM

#4

How is the power difference?

  • tang426

Posted February 26, 2014 - 05:08 PM

#5

Need to rejet for sure. Seemed to flame out a lot more I woods ride so I really didn't notice any power increase. Noise increase yes. I would like to try a q4

  • redogg323

Posted February 27, 2014 - 04:32 AM

#6

I Am getting into mx and I have been told stay stock





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