Heat from the exhaust system can become uncomfortable, especially when riding in slow traffic. These heat shield insulation liners are the solution for this problem. They provide increased riding comfort while maintaining the stock look. Each insulation liner is precision cut to fit exactly inside the stock heatshield. They are invisible but block heat transfer and lower the surface temperature of the outer shield. Easy to install with no modifications needed. The Heat Shield Liners are made in the USA by Design Engineering Inc. and are dual layer constructed of Aluminum and Dura 2000 insulating material and offer a more than 60% heat reduction.