Product Description
20 SQ FEET (5) 18" x 32" Sheets
-Pure Butyl
-Foil Barrier
-CCF Layer
Get the job done in a SINGLE layer with the GP STFU 250 Mil Sound Deadener.
Once applied GP STFU 250 Mil Sound Deadener lowers panel resonance, drastically reduces flex, and prepares the interior of your vehicle for a quality sound stage.
Whether you compete in SPL or Sound Quality, the GP STFU 250 Mil Sound Deadener has tremendous advantages for either application.
*GP STFU Sound Deadener is the #1 choice by some of the top installers in the USA. We often get to see it used in extreme SQ setups in exotic cars ( Simplicity In Sound: Milpitas, CA), all the way to the insane and extreme SPL builds (Audio 2000: Tuscan, AZ.
*GP STFU Sound Deadener is also the #1 Choice for Hot Rod, and Speed shops across the USA because if its ability to assist in keeping road and engine noise OUT of the interior. GP STFU Sound Deadener is the go to deadener for Forged Performance who specializes in building 1,000+ horsepower Nissan GTR's.
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Q&A
Q: This is much thicker than all other deadeners, do I need to worry about it fitting behind trim panels
A: Not at all, the Acoustic Foam layer serves as a decoupler, and easily compresses behind trim panels, making everything overall more solid in the vehicle.
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Q: Do I use a heat gun for application?
A: A hairdryer can be used during the application process, we suggest using a roller, and a hairdryer being sure the deadener makes 100% contact with the surface, a heat gun can cause damage to the acoustic foam layer. The high grade butyl can be applied without additional heat in warmer weather, and will not come off. For non flat surfaces, be sure to cut into pieces when applying as it is easier to be sure you make full contact with the surface you are applying to.
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Q: Will I notice a difference once installed?
A: Yes, on the sub stage in all testing using sound measuring equipment, we have seen anything from simple gains on the db meter at peak frequencies, to a tremendously widened bandwidth where the vehicle gains overall across the musical range. These results will vary from vehicle to vehicle.
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"I'm tuned low, and my car never played beyond 36hz well, every since I installed this deadener I'm enjoying tracks I would not play due to poor performance all the way up to 45hz. My car is much more musical now!" ~Cody
"My car had a ton of rattles, I pinpointed where they were, and put this deadener to use, now all you hear is clean and clear bass coming from my car." ~Rick
"So far I've only done my passenger side door with 100% coverage on the outer section and already reading 0.5 db louder making it my highest score to date, can't wait to see what else I gain." ~Phillip
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Product Reviews
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STFU V2
Really loving this sound deadner it brang my system to life after installing just on the roof.Am gonna be ordering more soon for doors and back wall. im curious if your able to double up layers of this stuff or if the foam would tear
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Love it
I recently tore out the last of the back seats in my truck, the backrest. Which left a bare metal back wall and it was louder as if I had a window open plus I had new rattles. I decided to go with the GP 250MIL. It was easy to work with and now it’s quiet in my cab and no more rattles when the bass is hittin.
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Sounddeadner
Very thick and works wonders
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Do it in one shot
This is stuff is the truth! I'll never use another deadaner as long as I'm alive. This is the second vehicle I've used it on.
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First time using gp deadening but have to say its pretty nice. Def helped alot. Will def be buying more
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Sound Deadner
The Best soundedner you can buy, done bought about 20 sheets for my lincoln town car and my chevy tahoe!
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Sound Deadner
Best, and thickest sound deadner you will ever find!
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ANIME TIDDIES
THIS SHIT THICC AS FUCK SON SHIT SO THICC I SLEPT WITH IT, IT KEEP ME WARM AT NIGHT B O O P B O O P
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best
Works great! Best quality sound deadening on the market, thanks gp.
