The first step in controlling underhood temperatures is to keep heat in the exhaust and evacuate it out of the engine compartment. DEI?s Exhaust Wrap will reduce underhood temperatures by up to 50%, while providing additional horsepower, engine protection, and passenger comfort. Made of high-temp composite fiberglass with a proprietary coating to enhance heat retention and add durability. Guide line seams are sewn into the edges to ease installation. Available in 2 X 50' rolls or as part of a kit that includes 2 rolls of exhaust wrap, 1 can of black or silver HT Silicone Coating and all the necessary locking ties.