What is GTMAT?

Is your ride full of rattles and road noise? Do your panels buzz when the bass drops? You've spent your hard earned cash on an audio system that rules the neighborhood, now give your car the power of GTMAT Automotive Sound Deadener! Proven to reduce unwanted noise and increase bass quality, GTMAT High-Performance products are the new standard for value sound dampening. Just one layer of our GTMAT Deadener is enough to double your stereo output quality, at nearly half the cost of the leading brand!

GTmat Ultra 80milGTMat Supreme 110milGTmat OnyxGTmat Quadro
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GTMAT is the new standard for Automotive Sound Insulation! GTMAT is an aluminum-backed sheet material that when used on automotive panels reduces unwanted noise and vibrations. Thousands of customers have used GTMAT to improve their car audio experience and now you can too!

Not only will you hear an amazing improvement in sound quality, but you will FEEL it as well! GTMAT makes your ride feel more solid, and helps block heat transfer, turning your humble ride into a cool righteous sound machine!
GTMAT is available in sheets and rolls, a variety of thicknesses and material composition. We are certain to have the proper product for your sound deadening needs.


GTMAT Features



  • Impressive Bass Improvement
  • Available 50, 80, 110 Mil Thick
  • 4 Mil Aluminum Shield
  • Sheet, Roll, and Liquid Formats
  • Super High-Temp Superior Adhesion
  • Kill Unwanted Noise, Rattles, Vibrations
  • Reduce Exhaust and Engine Noise
  • Easy Application
  • Flexible, Plyable, Malleable
  • Overlap Layers for Additional Vibration Dampening
  • Use Anywhere - Doors, Trunks, Side Panels, Hoods, Roofs, Firewalls, Floors
  • Paintable Surface
  • Patented Rubberized Compound
  • Durable, Waterproof, Permanent
  • Adheres to Most Any Surface Instantly
  • Sound AND Heat Insulation
  • Massive DB & SPL Gains
  • Low Cost Solution
  • Tested, Proven, Guaranteed
  • Toll Free Support 1-855-GT-SOUND (487-6863)


Aftermarket exhaust systems are a common addition to any vehicle to maximize performance and sound. Unfortunately much of that exhaust sound you want on the exterior leaks into the interior of your car.

GTMat Pro is our most affordable sound insulating mat offering substantial sound insulation at a fraction of the cost of leading brands.

Our test was simple, yet accurate. Obtain two decibel readings of the interior of the car using a decibel meter. One reading while the engine was idling and a second reading at highway speeds. The application of only 10sqft. of GTMat Pro resulted in an average of 5 dB at idle and 6 dB at highway speed.

It is important to keep in mind this test was conducted with our most affordable, thinnest mat in an isolated area of the vehicle. This was to demonstrate the minimal decibels reduction one can expect with our products. Application of our premium thicker sound deadener such as GTMat 110 or GTMat Quadro in larger areas of the vehicle will produce substantially higher decibel reduction.





GTMat is proud to call Texas home, and with an average summer temperature pushing 100°F we know the importance of having a sound deadener that can stand the heat.

This is another simple yet effective test demonstrating the adhesion of GTMat in high temperature environments. We compared GTMat Pro and GTMat Onyx against two common sound deadener solutions; A well known premium brand and a popular discount sound deadener. after adhering a 1"x1" sample of our four sound deadening materials to a piece of sheet metal we placed the sheet in an oven.

As the temperature rose and time increased the ability for the materials to stay adhered to the metal became evident.

  • GTMat Onyx - +400°F
  • Premium Brand - +300°F (per their spec sheet)
  • GTMat Pro - +250°F
  • Other Discount Brand - +185°F
Our GTMat Onyx showed superior adhesion over the premium brand sound deadener and our discount GTMat Pro showed superior adhesion over other discount sound deadeners on the market.



Every day, Customers Choose GTMAT Over Any Other Brand!


When it comes to choosing a value sound deadener, we know you have a choice. When you choose GTMAT, your satisfaction is 100% guaranteed! All of our products come with a 90 day money-back guarantee and a lifetime product warranty!