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NVX SDTK20

91 mil 20 sq ft Car Trunk Sound Deadening Kit (Five 18" x 32" Sheets)

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• 20 square feet sound deadening kit
• Material Used: Vibration Dampener
• Material Thickness: 0.091 (2.3 mm)
• Install Location: Trunk
• Pack includes five 18" x 32" sheets

Learn more about the sdtk20
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2026-07-27 11:08:20
List price $71.99
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$49.99

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NVX - Worth the Envy - Direct to Consumer Car Audio

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Current Promotions (1 offer)


For a limited time, get 50% Off of the NVX SDRLR1 roller with the purchase of select Sound Deadener. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

NVX SDTK20

50% off


Priced separately $60 98

Promo Savings of $5 50

Total price:

$55 48

Product Highlights


• 20 square feet sound deadening kit
• Material Used: Vibration Dampener
• Material Thickness: 0.091 (2.3 mm)
• Install Location: Trunk
• Pack includes five 18" x 32" sheets

Description


NVX brand icon

Authorized dealer

NVX Sound Deadening 18 By 32 Pieces
Increases Sound Quality No Filler Easy Installation
Butyl Rubber And Aluminum Foil

Product Details:

  • 20 square feet sound deadening kit
  • Core is based with 100% pure butyl rubber to withstand extreme heat
  • No asphalt, tar, or cheap fillers - will not outgas, melt or fall off
  • Waterproof barrier protects against moisture damage and mechanical oils
  • Up to 30% thicker than cheap 50–80 mil alternatives
  • Flexible aluminum backing contours tightly to complex door panels and vehicle curves with ease
  • Structural damping kills unwanted sheet metal resonance caused by heavy mid bass
  • Seals cavity to drastically increase speaker bass response and clarity
  • Lowers cabin ambient noise so you hear your music instead of the highway
  • Reflects radiant heat to help keep your vehicle interior cooler
  • Simple three step peel and stick installation process makes upgrading your sound quick
  • Combine this kit with NVX SDRLR1 Rubber Roller for easy installation
  • Pack includes five 18" x 32" sheets
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Specifications:

  • Install Location: Trunk
  • Material Thickness: 0.091 (2.3 mm)
  • Amount of Material: 20 square feet
  • Material Use: Vibration Dampener
  • Optimal Performance Temperature: 14°F to 140°F
  • Rated Temperature Range: -75°F to 450°F
  • Application Temperature: 60°F to 90°F
  • Dimensions (each piece): 18"L x 32"W

Frequently Asked Questions (FAQ)


Rattles often come from the license plate or loose trunk latch. Ensure the NVX SDTK20 is rolled tight against the metal with an NVX SDRLR1 roller. For the plate, add a small strip of NVX SDSK2 behind it to kill the vibration.
Gravity pulls on the heavy 90mil butyl. You must degrease the metal with denatured alcohol first. Use an NVX professional roller to fuse the adhesive to the surface; hand-pressing isn't strong enough for overhead use.
The SDTK20 is ideal for standard sedans. For large SUVs or heavy bass setups, you’ll need more coverage. Supplement this kit with an NVX SDDK12 or extra NVX SDSK2 sheets to cover the wheel wells and floor completely.
The 4mil aluminum foil on the NVX SDTK20 is sharp. Always wear protective gloves and use an NVX stainless steel utility knife for clean cuts. Smooth the edges down firmly with a roller to prevent the foil from lifting later.
No, it must be applied directly to the bare metal. Strip the factory liner, clean the metal, and apply the NVX SDTK20. If you need extra silence, place NVX BFK20 foam over the damping mat before reinstalling your carpet.

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Specifications & Details


Sound Damping Specifications
Installation Location
Trunk
Material Thickness
0.091
Total Amount of Material
20 square feet
Material Use
Vibration Dampener
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

NVX

Model Number:

SDTK20

Weight:

16.40lbs

Internal SKU:

sdtk20

Internal Product ID:

40530

Product and How-to Videos


  • NVX Audio Sound Dampening | Test & Installation Demo
  • How To Install Sound Damping in a Car | NVX Audio & Mitsubishi Evo 9
  • Sound Dampening for Enhanced Music in Car | NVX Audio

Customer Ratings & Reviews


NVX SDTK20 thumbnail image

5 star
93%
4 star
6%
3 star
1%
2 star
0%
1 star
0%



Durability
4.9
Value
4.9
Features
4.8
Design
4.8
Usability
4.9

Customer Photos & Videos


Customer Reviews

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NVX!

Excellent product. Thicker and cheaper than dynamat and boy does it work well. Got 100 square feet of this and treated my entire vehicle. Road noise is reduced. Temperature is more even in the Cabin. Doors sound way more solid when closed(Used 3 layers on the inner most part of the door and one layer on the outer part, under the door skin, to seal it up) car stereo sounds amazing now. Even at highway speeds. I really recommend this product for a vehicle that is overly loud or if you are a car audio enthusiasts. Worth the $$ but set aside pleanty of time. Took my brother and I over 60 man hours! Lol

By clayton on September 19, 2013

154 found this helpful


Wow good stuff

I bought the 20sq ft pack to do the roof of my 99 Toyota extended cab. This stuff is very thick and sticky. Went on no problem and is doing a great job. I only used three sheets to cover my whole roof area so I have two sheets left over. Time to buy more and put some inside of my doors. I am sure it will rock.

By Kevin on April 4, 2014

153 found this helpful


NVX Trunk Kit Sound Dampening Mats

I purchased the NVX Trunk Kit because it had the lowest price compared to Trunk Kits from Dynamat, Stinger & Ballistic. Since all the kits cover a 20 foot square area, I did not want to spend up to $80 more for basically the same product with a different name. It's Sound Dampening, how scientific is it? I've used Dynamat in the past and the only difference between Dynamat and NVX sound dampeners is the thickness. The NVX dampeners are a lot thicker, which makes them heavier. I don't necessarily want the added weight, but lining my trunk with the NVX Trunk Kit did make a noticeable (deeper sounding bass) difference in the way my 2 - 10" subs now sound as compared to before I lined the trunk. Installing the NVX Trunk Kit is the same as with all the others, again, it's Sound Dampening. I'm not talking about complex electronics here people. Those who disagree either work for Dynamat or Ballistic or have no clue.

By unbalanced-10 on August 4, 2014

154 found this helpful


NVX Sound Dampening

Bought this kit to help stop some very annoying rattling. It did the job! Helped alot with road noise too! Definitely made my system sound alot better. The whole kit covered my back deck, trunk lid, and front two doors. I'd definitely recommend this. I'm going to be ordering more in the summer to finish the rest of the car. It might be expensive but it was well worth it.

Three suggestions however.
1. Use gloves, other wise you have to use goo-gone to wash your hands. (Or panels you get this on). The paper scratches you up a bit too.
2. Make sure you clean the dirt off the panels, otherwise you'll waste this. It won't stick to dirty/dust.
3. Get the $9 roller, makes the job much less of a pain.

By Andy on March 24, 2013

151 found this helpful


Why get anything else?

Can't really complain about a product that offers more than their competition for a cheaper price.

By Sean on August 2, 2013

152 found this helpful


Great Deadener

Good heavy deadener. Better than Dynamat but cheaper. Go buy it.

By Henry on March 21, 2013

145 found this helpful


Just what I needed!

The NVX SDTK20 kit is just what I needed for my trunk, and to my surprise there were a lot of sound dampener for the buck. Installation was a breeze, if you need to sonicelectronix has a video showing how to install.

By nicholas on October 6, 2014

142 found this helpful


NVX SDTK20

muy buen producto lo he colocado en mi ford fx2 2008 con muy buenos reultados cero ruido con el suboofer altamente recomendado

By chico on March 21, 2014

145 found this helpful


Handy stuff for the hard of hearing....

I am no audiophile--I bought this for my Jeep Wrangler, which like all variants of the original Jeep is a noisy beast, what with little insulation, knobby off-road tires, and a thousand protrusions creating horrendous wind noise. It was a challenge to even use my noise-canceling trucker's headset on a cell call. So I applied it throughout the foot wells front and back, mostly single layer with some overlaps here and there. It definitely reduced the interior noise level--not as dramatically as I hoped but I sure wouldn't take it out! Installation was ridiculously easy--its tacky but not so tacky that you can't pull and relocate a piece. I was surprise by how wrinkled the aluminum was in places--and nothing I tried smoothed it out. But it is entirely functional and as it is under carpet plus heavy duty floor mats, appearance is scarcely an issue. Its been down for about 2,000 miles and so far, no signs of wear. Other Jeep folks--consider putting it in the back cargo area, too. I didn't at this point, but may well do so soon--cut the road noise a bit more.

By Ranger G on September 18, 2013

143 found this helpful


Great sound deadener.

I bought some of this because it was on sale at the time to see what it was like and it didn't disappoint. I put this on top of the Stinger and Dynamat that I already have in my truck. It was easy to work with especially with a roller and heat gun for the hard spots. So now I've got 4 different brand sound deadeners in my truck, 3 layers almost everywhere. I highly recommend the NVX deadener over the Dynamat which is way overpriced. This is easy to work, forms well and doesn't tear your hands up.

By John on August 6, 2013

134 found this helpful




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