FMF exhaust

9 replies to this topic
  • YZ426man

Posted June 04, 2002 - 08:27 AM


I want to know if the fmf power core 4 and the high flow header is a good choose for a low end do to mid range pipe. if not what is better. please help thanks.

  • YZ426man

Posted June 04, 2002 - 04:06 PM


can some one please give me some information on this exhaust thanks.

  • yz426509

Posted June 04, 2002 - 06:12 PM


I have the power core iv Q with the power bomb header. Awsome low and it just keeps pulling. I talked to a guy at the track last week who said, "If you like the Q, try the power core IV". I think i believe him because he was haulin. I switched from a White Bros R4 with WB header. The FMF set up is much better.

  • AZ918MAN

Posted June 04, 2002 - 09:20 PM


dude if you want low to mid power the power core 4 with the supercross header is the way to go - gives great low and mid. also another great pipe would be the dubach pipe - whatever you choose the dubach or the fmf it will be a great choice.

  • 98yz

Posted June 05, 2002 - 03:21 AM


Does FMF boast any weight savings with the power bomb and power core 4 over stock?

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  • Jason_in_KC

Posted June 05, 2002 - 08:45 AM

#6 your pennies bro! For 14$ you can get the ELN needle and have a midrange monster..all of these pipes are pricey and you have to feel for yourself how much a needle can really do in these bikes!
Yamaha part # for the OBELN
5NL 14916-EN-00
Worth a shot before dropping some serious coin on exhaust.

  • AZ918MAN

Posted June 05, 2002 - 10:29 AM


yeah they both shed a few pounds. I run the stainless steel on my practice bike and the complete Titanium on my race bike. like i said before the Dr.D pipe or the fmf pipe would be the way to go with the 426. :) :D

  • Vanilla_Gorilla

Posted June 05, 2002 - 04:06 PM


I run powerbomb titanium header and powercore 4 silencer. its a great combo. It gives insane low end and it pulls all the way to the engine's rev limiter. this is by far the best all-around combinationi have tried, andbelieve me, ive tried many.

  • YZ426man

Posted June 06, 2002 - 04:21 AM


is there a difference between the high flow header and the power . also what is your guys jetting.

  • YZ426man

Posted June 06, 2002 - 07:58 AM


what jets should i put in it and what size. thanks

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