Feel the Dynamat Difference! Dynamat Xtreme provides complete coverage that reduces road noise, stops speaker distortion, and blocks resonance & vibrations for a more comfortable driving experience. Dynamat is used by the world's top hot rod & custom builders because they know it makes their cars ride cool & quiet and installing Dynamat Xtreme couldn't be easier thanks to the simple peel-and-stick application. Dynamat is the original & most trusted name in soundproofing & heat control; our products are the first of their kind, and are always made at our headquarters in Ohio.