[cook_dw]

Not under their high temp side but on the firearms side they do. Under the specs for one of the whites it states: <span style="font-style: italic"><span style="font-weight: bold">C-140 Bright White is formulated to withstand elevated temperatures (~800°F) without discoloring. This makes the coating ideal for components for high- temperature systems.</span></span> so I would think it would work on exhaust but I have not tried it yet but I want to. I've gotten several samples from them and I like the look of the Bright White.