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KTM 125sx keeps breaking muffler bolt

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I have a 2009 125sx and the bolt that holds the muffler to the subframe keeps braking. I can check it before a moto and halfway through the moto it will break. It doesnt happen all the time but seems to every other weekend. Does anyone else have this problem? If so what did you do to fix it? This last time i wasnt able to easy-out it so i had to drill through and double nut it.

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I have a 2009 125sx and the bolt that holds the muffler to the subframe keeps braking. I can check it before a moto and halfway through the moto it will break. It doesnt happen all the time but seems to every other weekend. Does anyone else have this problem? If so what did you do to fix it? This last time i wasnt able to easy-out it so i had to drill through and double nut it.

 

 

Is your subframe bolted on tight?

 

Are all of the exhaust mounts on the bike? Sounds like you're missing screws in other places, and it's placing a ton of load on the silencer bolt.

 

Also - is your subframe bent?

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