ResoNix Stage-4 2-Door Sound Deadening Kit



Our ResoNix Stage-4 Door Kit treats a pair of doors to a very extensive level, only triumphed by our ResoNix Stage-5 Door Kit (only available via email). Our ResoNix Stage-4 Door Kit features ResoNix Super Max Mega Pro CLD Squares, Decoupler Foam, Fiber Mat Black Edition, Guardian, Barrier, and more! All to get you the very best performance out of your doors for sound system performance and general noise reduction.

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Stage-4 Door Sound Deadening Kit

The Complete Car Door (Pair) Sound Deadening Kit: Stage-4

       Hey everyone! I’m very happy to announce that we are once again not only offering pre-packaged door kits, but we are offering multiple based on our most popular options! This one is our next step in performance over our “Stage-2 option” for those who want to take it to the next level when it comes to sound deadening your doors for your car’s sound system, or even just general driving. This kit includes enough ResoNix Mega CLD Squares, ResoNix Fiber Mat 45, ResoNix Guardian, ResoNix CCF Strips, ResoNix Butyl Rope, as well as a ResoNix Roller in order to treat your doors in a way that reduces resonance, rattles, buzzes, absorbs outside noise, and seals your door-mounted midbass speakers to the grille in a way that gets the job done beyond a reasonable doubt in a way that overall performance cannot be touched by anything else on the market.

Kit Includes:

20 Square Feet of ResoNix Mega CLD Squares

10 Square Feet of ResoNix CLD Squares

1 Box of ResoNix Guardian

1 Sheet of ResoNix Fiber Mat 1.0″ OR ResoNix Fiber Mat 0.5″

1 Sheet of ResoNix Barrier (7mm foam)

1 pair of ResoNix CCF Strips

1 Roll of ResoNix Butyl Rope

1 Sheet of ResoNix CCF Decoupler 3S

1 Sheet of ResoNix CCF Decoupler 3F

ResoNix Roller

The normal price for these individually would be $1515. We are offering a special on this kit starting at $1089.

Note: Please make sure your doors can handle the thickness of Fiber Mat 45 before purchasing. MOST cars can without issue. If they cannot, use Fiber Mat 25. If you need help, feel free to contact us for guidance.

Please be aware that some individual items may be on backorder, and will ship when they are back in stock. To check the stock of an individual item, check the item’s individual product page, linked above. Thank you.

The “Doors” section from our ResoNix Buyers Guide will give you details behind the products and the installation for all of the different ResoNix Door Kits!