Exhaust pipe shape?

[Sullivan_imp]

Should the exhaust pipe (4-into-1) cross section of a 2014 CB1100 be round? I just noticed that mine appears to be dented on the inside, across from the swingarm. Is this indentation there to give clearance for the swingarm? It looks a bit irregular, as if the swingarm somehow swung sideways into the pipe, rather than being designed for the clearance.

 

[emptysea]

Hi and welcome to the forum. There is an indentation in the muffler that is normal. I'm not sure if that's what you're seeing, though.

 

[flynrider]

If it's the muffler you're talking about, check this out :

Muffler Dent?