fmf vs stock muffler

2 replies to this topic
  • ymxsofun

Posted June 02, 2008 - 06:30 PM


i got to cut off the sound of my bike in my riding areas. Can I fit a stock muffler (my bike's a yz 426f 2001) to a fmf power bomb header. Fmf don't recommend this (I'm impressed). Or can I change the end cap or something else in my Titanium 4 muffler to cut off the sound (exept packing it with new stuff)?


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  • grayracer513

Posted June 02, 2008 - 06:44 PM


A better choice than either would be the Q4 from FMF. The stock pipe will work, but it won't be a lot quieter, and you'll then need an end cap for it.

  • KAS

Posted June 02, 2008 - 07:43 PM


Best thing you can do with the stock pipe is Pro Moto Billet endcap with their "silent" insert. But then you're out almost $200 and your bike *might* be 96dB.

Or like gray said, pony up the $324 (from for the Q4 which is built to run quiet, not designed with sound as an afterthought.

FWIW a buddy of mine put the Q4 on his KLX450 and it blew 92dB.

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