The Heat Shields are made from a very high-heat resistant material, initially developed and used by NASA. This helps to reduce radiant heat from the exhaust headers and sports catalysts. The shields are heat resistant for temperatures of up to 1300 degrees Celsuis.
Reduced heat or temperatures in the engine compartment improves performance. Cooler air boxes result in a cooler air temperature for the engine to “breath-in”. In turn, the denser air makes more horsepower.
As the outside of the glaring hot exhaust is shielded from its surroundings, the shields also reduce the possibility of fire which sometimes arises from liquids/oil getting in contact with the exhaust system. The heat shields can also be attached to the headers without dismantling.
The Headers CANNOT be installed & used WITHOUT these Heat Shields.