SoundSkins Pro 2020–2021 GMC Sierra HD 4-Door Sound Deadening Kit | Custom Fit
Transform your heavy-duty truck into a quiet, luxury-grade sanctuary with the ultimate GMC Sierra HD sound deadening kit. Precision-engineered for the 2020–2021 GMC Sierra 2500 and 3500 4-door Crew Cab models, this kit is designed to eliminate the intrusive road noise and engine vibrations common in high-performance HD trucks.
Premium GMC Sierra 2500/3500 Door Soundproofing While GMC trucks are known for their professional-grade interiors, the sheer power of an HD engine and the roar of oversized tires can still disrupt your cabin comfort. Our custom-fit GMC Sierra HD sound deadener provides a comprehensive acoustic solution. By treating all four doors with our precision-cut 3-layer material, you create a powerful barrier that blocks out wind whistle, highway hum, and diesel engine drone.
The SoundSkins 3-Layer Performance Material This kit utilizes a specialized triple-layer composite that does more than just dampen—it completely insulates:
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Acoustic Foam: Specifically tuned to trap and dissipate high-frequency wind and tire noise.
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Aluminum Foil: Acts as a thermal shield and provides the structural rigidity needed to stop metal panel resonance.
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High-Density Butyl Rubber: The core damping layer that kills low-frequency vibrations and gives your doors that solid, premium "Denali-level" thud when closed.
Product Highlights:
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Precision Pre-Cut Templates: Designed specifically for 2020–2021 GMC Sierra HD sound deadening needs. No measuring or manual trimming required; each piece is templated to fit your Crew Cab door panels perfectly.
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Audiophile Audio Clarity: By turning your doors into a rigid, non-resonant enclosure, your speakers perform at their peak with tighter bass and significantly clearer mid-range.
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Thermal Barrier: The triple-layer design helps maintain your interior temperature, keeping the cabin cooler in the summer and warmer in the winter.
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100% Waterproof & Heat Resistant: Our high-temp adhesive backing is built to withstand extreme climates without melting, peeling, or holding moisture, protecting your door internals for the life of the truck.
Technical Specifications (Model: SSK-SIERRAHD20214DR)
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Coverage: Complete 4-Door Treatment (Crew Cab)
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Material Thickness: 4.5mm
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Composition: Acoustic Foam, Aluminum Foil, and High-Adhesion Butyl Rubber
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Compatibility: 2020–2021 GMC Sierra 2500 HD / 3500 HD (4-Door Models)
SoundSkins Pro GMC Sierra HD 4-Door Template Kit 2020+
PN: SSK-SRHD4DRV2
UPC: 850015591334
The machine cut design makes installation quick and easy. Taking all the hard work out of sound proofing your vehicle.
The kit will reduce tyre road noise and insulate the cabin to improve your driving experience.
Coverage
Covers all 4x doors inner layer for a total of 30 sq ft.
Suitable for GMC Sierra HD Crew Cab models from 2020+
Kit includes 4x door pieces.
Specifications
Weight: 20 lbs Total 4x Pieces
Thickness: 4.5mm
Material: 1.5mm Butyl & 3mm smooth acoustic foam
Size: – Approx. 30 sq ft total
SoundSkins Pro Material
The SoundSkins Pro is an elite in sound dampening for your vehicle, designed to improve your cars stereo performance and reduce outside road noise in a single material.
SoundSkins Pro is a combination of 3 layers, acoustic foam, foil & rubber butyl (the black sticky stuff). This custom blend of materials allows you to layer any panels in your vehicle to reducing vibrations, loss of sound and improve heat rejection.
The rubber butyl has a high adhesive level meaning it will never never fall off once applied correctly. The foam and butyl are both waterproof and heat proof designed to stand the test of time.
