Exhaust is making a whistling sound?

3 replies to this topic
  • pbcrazy9898

Posted September 03, 2016 - 08:53 AM


Hey guys,

My '07 Yamaha WR450 makes a whistling sound when I let off the throttle and I want to know if it is something I should be worried about.  I took a video so you guys can hear what I am talking about.   Nobody else's bike sounds like this when I go on group rides or when Im at the track. Let me know what you guys think.


  • Northern Pride

Posted September 03, 2016 - 11:33 AM


Sounds like loose hardware or a loose rivet

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  • yzdude250f

Posted September 04, 2016 - 06:52 AM


I wouldn't worry about that.

I would verify the seal at the cylinder head, mid pipe joint and looks around your muffler for exhaust leaks kinda what of sounds like to me. You could have the slightest leak making that whistling noise.

  • pbcrazy9898

Posted September 04, 2016 - 02:54 PM


sounds good,  I just want to make sure I'm not slowly ruining my engine


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