00 424 too loud for CA - Best 96db exhaust/

7 replies to this topic
  • Turf_Runner

Posted April 29, 2004 - 12:25 PM


I have a 00 426 that currently has the stock header and WB E series can with 4 plates. I cannot meet the 96db level (No surprise there) and cannot continue to pay the fines. Has anybody tried the new WB E2 or has a reccomendation that will meet 96db without losing too many hp's?

Any suggestions would help.

Turf Runner

  • John_Lorenz

Posted April 29, 2004 - 12:54 PM


The E2 has not been released for the 426 yet. SHould be the next week or two.

Those That got the E2 for the YZ 450 have tested at above 97 98db, WB has correct these and now test below 96. If you need to get down to 96 cheeply until the E2 is released

put the stock muffle back on and get a Pro-Moto Insert and spark arrester about 140 buck I think

  • Matt96xr6

Posted April 29, 2004 - 03:35 PM


Just got one installed in the shop (e2) and there was NO sound difference from stock. Just stuck out another foot. Still loud and the tone was even the same.

I am not a FMF fan, but the Q series mufflers are some of the quieter units I have heard on the 4xx bikes.

  • skthom2320

Posted April 29, 2004 - 03:44 PM


If you need to get down to 96 cheeply until the E2 is released put the stock muffle back on and get a Pro-Moto Insert and spark arrester about 140 buck I think

Yep. But be prepared for losing ponies off the bottom.

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  • yzf450jack

Posted May 18, 2004 - 04:01 PM


My FMF Q tested at 95.6 :thumbsup: :awww:

  • revolucien

Posted May 20, 2004 - 08:12 AM


FMF factory 4 with AMA 96db insert

  • sirthumpalot

Posted May 21, 2004 - 01:00 AM


From all that I have read the FMF Q seems to be the best "quiet" muffler. I haven't ridden with any quiet muffler so I don't have any real experience, but I do read a bit and this seems to be the general concensus from all that I have read.

  • Dano426

Posted May 21, 2004 - 06:03 AM


I have a Q on my 426 and it tested at 94. More low end torque, but you lose the high rev pull

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