93 db

4 replies to this topic
  • Island_rider

Posted September 10, 2000 - 07:30 PM


I am planning on going to the dunes in Oregeon.I was wondering how i could get my 426 under 93 db or am i dreaming ? Any ideas or suggestions would be greatly appreciated.Also will i need a spark arrestor ?

  • Matt_Porritt

Posted September 11, 2000 - 03:03 AM


This may sound a little silly.. but get about 3/4 of a foot of bicycle inner tuber and slip it over your exhaust outlet.
Tape in place and it'll lower your db output a bit.

Sounds silly.. looks silly.. but is V.Cheap and works! :) :D

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Matt Porritt
99 YZ400F
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Posted September 11, 2000 - 03:55 AM


Read the post Stock "quiet" Pipes. See what you think.

  • Taffy

Posted September 11, 2000 - 04:28 AM


over here in England our pipes come standard at this DB reading. now if the pipes are anything like the 15 pipe shoot out i read in DBR you aren't going to beat Mr Yamaha's figures. unfortunately we don't get the very precise tests you do over the pond.

i reckon the WR pipe is for you.


  • discopete

Posted September 11, 2000 - 11:31 AM


Hey Islandrider, I live in Oregon and the dunes are great. You do need a spark arrestor and have to be at 93db. They check bikes frequently. The key is not to haul ass by them. I have the FMF Power core iv silencer but have yet to take my 426 to the dunes. Hopefully i'll be there in two weeks. Good Luck!!!

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