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Hey guys, I figured this would be the best spot to ask this question.

I noticed something a couple weeks ago but I have several bikes and cant remember if it has always sounded like this or if it is a recent change or abnormal. I have only had the bike about a year or so. I was riding with a friend last week and he said something about this and I started looking into it and maybe it's an exhaust leak? I got the bike with the yosh slip on already on it. It was really loose on the collector pipe so I tightened that down last year, I only noticed it because I did the CRF450 brake reservoir mod and found it then.

The headers are stock obviously but I don't know how rough the PO was on the headers when installing this one, if there is the collector connection gasket even there, if any or all of the above were replaced or damaged when doing said work.

It doesn't really look like there is an abnormal amount of carbon anywhere except MAYBE at cylinders 2 and 3. Also the cylinder 3 exhaust header clamp ring is quite a bit more rusty than the 1, 2, and 4. You can see it in the video some, I tried to get all that I could in there.

Let me know if it sounds normal or, if not, anyone else has noticed this before. Thanks!









 

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Sounds normal to me
 

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Discussion Starter #3
Sounds normal to me
Damn! Quick response!!

Thanks, that is reassuring. I thought it was fine and it rides and runs fine. It was a cold start in this video so it wasn't warmed up or anything but I still had, what I thought was the weird noise there in the video.

The #3 exhaust clamp ring may just be more rusty because of the way the rain came through the triple tree down onto those. (yes it lived outside before I got it, then moved it into my climate controlled motorcycle heaven:thumbup: ) My wife gets pissed because she can't get her car into the 3 car garage but I'm not putting any of my 11 bikes outside so she can get her car in there :crackup:

Thanks moeman!
 

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My pleasure man
 
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