HeatShield Products Muffler ArmorKeep the heat where it needs to be with Heatshield Products‘ new Muffler Armor. This material goes over mufflers to reduce radiating heat by up to 70 percent, and maintains high exhaust gas temperatures to enhance efficiency and performance to your ride. See more details below.

Official Release:

Keep the heat in your muffler and out of your passenger compartment and trunk with Heatshield Products Muffler Armor. Muffler Armor uses Heatshield Products BioCool thermal barrier material to withstand 1,800 degrees Fahrenheit of continuous heat, which helps reduce radiant heat from mufflers by up to 70 percent! It installs easily and securely using Heatshield Products stainless steel locking Thermal-Ties, and it is water and chemical resistant for increased durability and longevity.

Heat from the car’s mufflers can be conducted through the floorboards and increase the interior temperatures to uncomfortable levels. For more rearward mounted mufflers, that same heat can raise trunk temps where there is little or no airflow to help release the heat. In addition to cooking whatever you’re carrying in your trunk, if you have a trunk-mounted fuel cell, that heat can elevate fuel temps and hurt performance, along with increasing the risk of vapor lock.

Besides reducing temperatures in the passenger and trunk compartment of your car, Muffler Armor keeps the heat in the muffler, helping to maintain high exhaust gas temperatures. This increases exhaust flow velocity, helping to improve engine efficiency and performance.

Heatshield Products has engineered and manufactured heat barrier products for 30 years, serving the performance and racing industry with the highest quality products at competitive prices. The company is family owned and operated, and is proud to make its products in the U.S.


  • Keeps heat in the muffler to maintain high exhaust gas temps
  • Withstands up to 1,800 degrees Fahrenheit
  • Reduces radiant heat from mufflers by up to 70 percent