Jet-Hot have been claiming for years that their sterling coatings significantly reduce temps. when applied to headers.
As for reducing actual engine temp itself I did ask them that question and the reply was you 'might' get a drop of around 3 to 5 degrees because of reduced thermal transfer and also the hot exhaust gasses are able to pass through the pipes faster with the coating so more cool air can be brought in via induction. (I have no idea if that is true or not)
http://www.jet-hot.com.au/advantages.htm#Performance
![[Image: graphreduction.jpg]](http://www.jet-hot.com.au/images/graphreduction.jpg)
edit: I was going to get my last bike done when I bought it. They quoted $160 with a lifetime garauntee on new headers.
As for reducing actual engine temp itself I did ask them that question and the reply was you 'might' get a drop of around 3 to 5 degrees because of reduced thermal transfer and also the hot exhaust gasses are able to pass through the pipes faster with the coating so more cool air can be brought in via induction. (I have no idea if that is true or not)
http://www.jet-hot.com.au/advantages.htm#Performance
![[Image: graphreduction.jpg]](http://www.jet-hot.com.au/images/graphreduction.jpg)
edit: I was going to get my last bike done when I bought it. They quoted $160 with a lifetime garauntee on new headers.