Wave Breaker Kit - Contains 2-8"x8"ea Speaker Back Wave Deflecting Pads


In stock. Usually ships in 2 days.


Wave breaker can be used to treat standing wave or back wave in every speaker in your car, truck, boat, rv, office and home. Wave breaker is a synthetic large cell foam placed directly behind the speaker magnet will eliminate standing wave/back wave from that speaker. How is standing wave created? Every speaker creates this wave - when the speaker cone moves in and out waves are created in two directions.

The wave that moves out the front is called music. The wave that moves out the back of the speaker is called distortion. This back wave reflects off the solid surface behind the speaker and bounces back to the front essentially throwing the speaker out of phase. When HushMat is placed behind the speaker these back waves are absorbed and broken up in the wave breaker molecular structure. This prevents the bounce back and therefore prevents the distortion. Therefore you get all the music you paid for out of that speaker.

Simple to use - cuts with scissors and just peel and stick. HushMat's incredible adhesive technology makes this product a very simple install.

HushMat is the only OEM specified and approved sound deadening & thermal insulating material available to the automotive aftermarket.

Features and Benefits

Reduce Heat & Road Noise all from one USA Made product!!
HushMat ULTRA - Butyl Damping Pads “RATED #1 INSULATOR” by Restorer Magazine

  • Reduces road noise & vibration - low frequency noise from 0 to 1,000 Hz
  • Reduce heat Reduces thermal transfer by over 40% 
  • Stay warmer in the winter & cooler in the summer Insulates from -30 degrees up to 550+ degrees Fahrenheit
  • Light weight & super flexible less than 1/8” thick and 0.47 pounds per square foot
  • Adhesion is guaranteed - No alcohol or acetone wash needed; no installation tools required
  • Trims easily with standard razor knife or household scissors
  • Self-Adhesive peel and stick – no glue required
  • Installs in 1/2 the time versus other brands
  • Manufactured in the United States of America  
  • Outperforms closest competitive brand by over 40%
  • Original Equipment Manufacturer approved - Meets or exceeds automotive damping specs GMO149M - General Motors, WSB-M5G58-A1 - Ford and MS-CD 629 Type C – Chrysler
  • Increased sound in stock Dodge pick up by over 7.9 Db @ 100 Hz published by D-Sport magazine.
  • Universal application  - Apply to Firewall, Floor Pan, Tunnel, Doors, Roof, Rear Wheel Wells, Trunk and Quarter Panels
  • Available in custom vehicle kits – search by make, model & year for your vehicle



  • Wave Breaker effectively disrupts back wave from speakers in a wide frequency spectrum from 10 to 15000 Hz
  • Withstands ambient temperatures from -30 degrees up to +300 degrees Fahrenheit
  • Bonds to fiberglass, plastic, and all metal surfaces
  • 8” x 8” pads – one wave breaker per co-axial speaker – or – two wave breakers per sub woofer
  • Trims with standard razor knife or household scissors
  • Self Adhesive peel and stick – no secondary glue - adhesion guaranteed
  • Low moisture absorption & outstanding UV and environmental stability
Highest Quality + Core Competence + Incredible Adhesion = GREAT VALUE!


HUSHMAT Wave Breaker is pressure-sensitive, semi-closed large cellular, synthetic rubber foam, which has excellent adhesion properties. The Wave Breaker structure is designed to efficiently disrupt sound waves into a random surface thus allowing the full sound quality of the speaker to perform without distortion. Wave Breaker is also a very light weight substrate and will bond directly to the HushMat Ultra on door speaker applications or the back of sub woofer enclosures.

HUSHMAT Wave Breaker is temperature & environment resistant and will maintain adhesion through all automotive environments (up to 300 degrees F). Humidity, UV and other conditions consistent with automotive use will not disrupt Wave Breaker performance.

The superior adhesive properties of HUSHMAT Wave Breaker allow it to be used in horizontal, vertical or inverted applications. It has good conformability and can be applied on complex shapes.

Contact your Hushmat representative for details, and for design and custom application assistance.


COLOR: Polymer - Black
MASS: Approx. 0.2 pounds per cubic foot
THICKNESS: 13mm or 1/2"
SHELF LIFE: At least 12 months when stored at 40°C or less
COLD FLEXIBILITY: Can be bent around 25mm. mandrel at -30°C with no cracking or loss of adhesion.
Tested per FMVSS 302, HUSHMAT Wave Breaker is self-extinguishing and meets all aspects of the standard.
SAFETY: HUSHMAT Wave Breaker is not considered a hazardous material.


DENSITY: 6.6lbs./ft.3 TEMPERATURE RANGE: 300F to -40F
TENSILE STRENGTH: 7.0 lbs./in 2 UV STABILITY: Excellent
at 600-4000Hz
< 2%
4.6% or less

HushMat FAQs

Click on the questions below to reveal the answers

Is there a difference of performance between black Ultra & silver Ultra?

I have a [make/mode/year] vehicle. What do I need to buy to outfit the interior?

We own a motorhome and would like to reduce road noise and tire noise while traveling on rough roads. Do you have a product for this?

I am looking for maximum quietness in my vehicle. Which product and how much would you recommend?

Can I get a sample of the product before committing to buying?

Will the Silencer Megabond foam stand up to direct firewall heat?

I’m planning on buying HushMat but I don’t want to install it myself. Who do you recommend?

I want to quiet down my dishwasher/washing machine, etc. Can I use your product to do this?

Do you have something to put under the hood? I have a custom paint job and I want to protect it from heat.

Will HushMat Ultra smell when it gets hot?

What do I need to do to prep the surface for application of HushMat products?

How much of my vehicle to I need to cover in HushMat Ultra to optimally reduce Heat?

How do I become a dealer of HushMat?

What is HushMat made of?

What kind of adhesive does HushMat use on its damping material?

How much time do I have to reposition HushMat Ultra when installing it?

What is vibration damping or also sometimes referred to as “dampening”?

What is HushMat?

What is a dB?

How can I treat high temperature "hot spots" on my car?

Where do I apply HushMat Silencer foam?

My License Plate rattles from the heavy bass from my sub-woofer. What can I do?

What sound reduction can I expect from a HushMat installation?