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Stinger RKO12

Overkill 0.25" Foam Damping Mat - Overkill 12sq-ft (1/pack 32" x 54")

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List price $94.95

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Stinger RKO12

Overkill 0.25" Foam Damping Mat - Overkill 12sq-ft (1/pack 32" x 54")


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Window Handle Removal Tool

Universal window handle removal tool helps remove the door panels on cars with manual windows.



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  • Foam Damping Mat for Door and Removable Body Panels
  • Made with automotive grade closed cell foam
  • Adhesive backing for easy application
  • Can be cut with scissors or razor knife
  • Adds cushion and fills holes in paneling
  • works as gasket material for speaker mounts
  • Package contains 1 sheet, 12sq-ft (0.25" x 32" x 54")
  • Authorized Internet Dealer

Sound Dampening Specifications

Installation Location
This is the area of the car that the sound dampening kit is designed to be installed.
Entire Car
Material Thickness
This is the thickness of the material, measured in inches.
Total Amount of Material
This is the total amount of material that is included in the package. It is measured in square feet. On packages that include several smaller pieces, this number combines all the pieces together.
12 square feet
Material Use
Use of material whether it be used for heat protection, sound absorption or decrease in vibration.
Sound Absorber
Secondary Use
This is the secondary use of the product. Many products that block road noise can also serve as an effective heat barrier, and vice versa.
Vibration Decoupler


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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Bastrop, TX

Verified Purchase
Not bad

August 13, 2015

I bought this to keep the rattles away in my door panels. I used it in conjunction with some NVX dampener that was put in my doors. This foam sheet can be cut to size and placed in the door panel to cushion vibrations and rattles from driving or pushing the speakers hard. Foam is nice and thick and there is a good amount of it for the price. Adhesive on the back side is sticky but will release easily if you want to do some adjusting after application. It doesn't absorb sound or do what the rubber/foil sheets do. It's there to be a pad between panels that can flap against each other and rattle/buzz.

12 of 24 found this helpful

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Pensacola, FL

Good sound

November 29, 2014

Adding this definitely helped with my sound quality in my doors,improved bass response.

36 of 73 found this helpful

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Accessory Tools and Products

Accessories added

Window Handle Removal Tool

Universal window handle removal tool helps remove the door panels on cars with manual windows.

Your Price $9.99

Belva Five Piece Installer's Panel Removal Tool Kit

Assists in removing door panels, vehicle upholstery, and many other parts of the car.

Your Price $11.99

NVX SDRLR1 Rubber Sound Dampening Roller

2" Professional Heavy Duty Roller for Sound Dampening

Your Price $6.99

Browse 1 question and 1 answer
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Why did you choose this?
Sonic Electronix Store
A nice foam pad helps your door speakers sound softer, warmer, and richer. The effects are most noticeable with higher powered speakers that have strong mid-bass. It sounds like putting heavy pillows in a bass drum. You eliminate those weird noises and just hear the fundamental notes that you want to hear.
Rex H on Aug 21, 2015

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Stinger RKO12