Prunus Exhaust... Watch the header pipes....

[MT09-Smurf]

Found this on YT, a bit smokey, assume it's burning of coating... But just look at headers....

[video=youtube_share;xC_ENFkkAt8]http://youtu.be/xC_ENFkkAt8[/video]

 

[colinlinz]

They can get hot. Especially the single wall types. This is a photo of a KLX650, it was just sitting there on a fast idle for a few minutes. The red area stops so suddenly because there is a heat shield over that section.

 

[Deep Armour Swede]

My last bike KTM 990 SMT runs red like that on idle!

 

[lee1980]

Imagine many bikes do when at rest if left, not a fan of that exhaust looks wise