Stock exhaust

8 replies to this topic
  • capt.270

Posted September 25, 2013 - 08:09 AM


Hey so I am looking to get a spark arrestor for my bike, probably just a end cap.  While I was at it tho I have an 03 YZ450 and it has the stock silencer on it that goes out to the edge of the fender. Would I be able to cut it off a little past the mounting bracket and put the end cap on there and not loose any power? or would I gain power? And also would it be louder or quieter?  thanks.

  • grayracer513

Posted September 25, 2013 - 09:50 AM


There is little or nothing to gain from shorteneing the muffler except more noise and eventually a cracked muffler core. 

  • capt.270

Posted September 26, 2013 - 11:23 AM


sorry i forgot to post I'm looking to protect the end of the muffler from being torn to shreds by wrecking, If i cut it to the mounting bracket it would be behind the side panel and more tucked away like the rest of the exhausts.

  • yz133rider

Posted September 26, 2013 - 11:57 AM


Id cut it without any worries. Itll look a heck of a lot better but dont go crazy as it definitly adds noise. Getting a fmf q with a arrestor already may be a better overalll option

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  • capt.270

Posted September 27, 2013 - 08:35 AM


So no problems or loss of power from cutting it? besides being louder (which is always good :ride: )

  • yz133rider

Posted September 27, 2013 - 09:31 AM


Its a 450 if it loses .35 of a hp will you really be upset?

  • grayracer513

Posted September 27, 2013 - 09:43 AM


 besides being louder (which is always good :ride: )


In what way is being louder good?  Louder is...


  • Damaging to your hearing
  • Physically fatigues you (whether you know it or not)
  • Adds nothing at all to the performance of the bike
  • Turns the public against the sport

  • yz133rider

Posted September 27, 2013 - 02:47 PM


I agree with that, louder is bad. Thats why i suggested the fmf q with a s/a buit in. Better looks, lighter, more power most likely and less sound.

  • capt.270

Posted September 30, 2013 - 10:15 AM


the sport is being shut down because riders are being disrespectful to others on the trails.  not because of a loud bike.

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