Dynamat Xtreme 20 ft. Trunk Kit 19405

20 ft. Trunk Kit with (5) Dynamat Extreme 18" x 32" Pieces

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• Dynamat Xtreme Trunk Kit
• 5 18" x 32" Sheets (20 Square Feet Total)
• Add SPL to Your Vehicle
• Reduced Trunk Vibrations
• Improves Bass Quality
• Reduces Bass Distortion
• Easy Application

Learn more about the dyna-19405
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Product Highlights

• Dynamat Xtreme Trunk Kit
• 5 18" x 32" Sheets (20 Square Feet Total)
• Add SPL to Your Vehicle
• Reduced Trunk Vibrations
• Improves Bass Quality
• Reduces Bass Distortion
• Easy Application


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Dynamat Xtreme 20' Trunk Kit

Dynamat Xtreme is a patented, lightweight elastomeric butyl and aluminum constrained-layer vibrational damper. The Xtreme Series adapts and conforms easily to sheet metal and other hard metals vehicles are made of. This material works best for temperature ranges between 14° – 140° but can withstand ranges between -65° - 300°.

Xtreme Applications

The Xtreme Trunk Kit is great for improving the overall sound quality in your vehicle by cutting out unwanted road noise. It is typically used on vehicles to reduce vibrations and rattles in the trunk. This kit comes in five 18" x 32" sheets combining for a total of 20 square feet which should be plenty for any size trunk your vehicle may have.

Easy to Install

Use scissors, a knife or a die to cut the Xtreme to the desired size and shape before removing the release liner. Next, remove dust, grease, moisture, and other foreign matter from the application surface. Now it’s time to peel off the release liner and start applying. The easiest way to apply is to bend the mat slightly and attach it along its shortest edge. Using a roller, press the mat tightly into place, the roller will help eliminate unwanted air pockets. There is no need for heating the material, for best results the application surface should not be below room temperature.

Product Features

  • Dynamat Xtreme Trunk Kit
  • Five 18" x 32" sheets (20 Square Feet Total)
  • For the trunk floor, side panels, and trunk lid
  • Add SPL to your vehicle
  • Improves bass quality
  • Reduces bass distortion
  • Reduces trunk panel vibrations and road noise which helps to clarify the overall tone of your subwoofer
  • Easy self-adhesive application
20 ft.2
20 ft.2
20 ft.2
20 ft.2
1.7 mm
2.0 mm
2.3 mm
2.1 mm
2.2 mm

Specifications & Details

Sound Damping Specifications
Installation Location
Material Thickness
Total Amount of Material
20 square feet
Material Use
Vibration Dampener
Warranty and Return Policy
Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider

Item Details


Model Number:




Internal SKU:


Internal Product ID:


Product and How-to Videos

Customer Ratings & Reviews

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Customer Reviews

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It is well worth it. From a small system all the way up to the whole trunk filled with subs. I have 2 15"s and it works great. Of course its not going to take care of all the rattle with that much power but it sure does help. I would recommend getting the tools with it or use something similar that you may have laying around the house. It gets tricky if you dont when you get into corners and awkward spots. It was a little small for my trunk in a 2007 mustang so another pack would have been helpful but I most def recommend it.

By big kevy on June 9, 2010


found this helpful.

Awsome stuff!!

Needed some sound proofing for my doors and this was perfect! B*** b** wanted 98$ for about a third of this so it was a no brainer. plus -I had enough left over for a bit of my trunk, not complete but enough. as usual Sonic shipped this fast, ordered on monday and got it by Friday so just about right for a weekend job.

By bob cow on November 29, 2010


found this helpful.

dynamat extreme

great product it does what it says eliminates road noise vibration and make your stereo sound 2wice as good after using this I'll buy it from here on out I used some other products in the past and you have to use 2wice as much on each spot and maybe even 3 or 4 layers and it's not the same this stuffs awesome 5 stars all the way !!

By Jimmy on August 3, 2014


found this helpful.

Nice Product!

I used this Dynamat in the trunk of my '97 Honda Prelude (small trunk) and I was able to cover the entire inside, including the trunk lid and still had one sheet left. The result has been incredible. The bass is warmer and louder, and there is absolutely no rattle. Not only that, you can barely hear the bass outside the car when the music is cranked. I'm running 1000 watts RMS to a single 12" ported box.

By Ryan on November 20, 2011


found this helpful.

best sound deadener around

Does what it supposed to! Best sound deadener around

By gary on March 21, 2010


found this helpful.

Simply The Best

I have two Kicker L7's powered by 1500 watts that abuse my trunk making everything rattle like crazy. After installing this, the rattling is pretty much gone. The bass sounds deeper and clearer. Highly recommended if you have bad rattling.

By Emanuel on July 30, 2011


found this helpful.

No rattling, No road noise

Does exactly what its supposed to do. F***** is a cheap ripoff that provides no sound dampining and falls off in cold weather. S****** R******* works just fine but material is folded which being stacked causes it to stick together and will take you 30 min to peel backing off.

1 sheet of Dynamat is rolled, not folded. Made installation a breeze but the wooden application roller is a must have!

By andrew on October 12, 2010


found this helpful.

Acura Integra - Richmond, VA

I ordered the Dynamat Xtreme 20' trunk kit to outfit my 1995 Integra and it worked out perfect. I was able to cut my expenses in half by going through Sonic Electronix. I really frowned upon my local dealers after doing business with Sonic Electronix, who would have thought that you could get such a solid deal.

The ordering was simple and my shipment was speedy. Hands-down, very pleased with Sonic Electronix and I will be doing business with them again in the future.


By Lee on October 29, 2010


found this helpful.

Amazing product

I only had the chance to apply some of the dynamat to the trunk and license plate. It reduced the sound of the vibrations by over 50%. Once it gets warm I can actually put it all in there and hear how it is.

By Muhammad on October 5, 2011


found this helpful.


install the dynamat in my car due to it rattles alot with my subs hate that sound install the dynamat and pretty much dont have it anymore would rec to anyone

By alfonso on March 16, 2011


found this helpful.


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