Had the black high heat ceramic coating(inside and out) done on my exhaust, header, gutted cat and Y-pipe to cans(wich are Akrapovic carbons). Great mod for the summer, cut down the radiant heat by more than half, bike runs cooler and actually seems a little stronger! One thing I noticed is the heat coming out of the exhaust is much hotter and the Akrapovic cans are slightly hotter to the touch. Cost me $180 for the coating. I have all my cars done with this same coating, my EVO race car's header is still holding up after all the abuse it's been though and two years of being on the car. Looks damn good on my yellow and black bike too!