---
product_id: 695406965
title: "Siless Max 120 mil (3mm) 6 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (6 sqft)"
brand: "siless"
price: "€ 148.20"
currency: EUR
in_stock: true
reviews_count: 5
category: "Siless"
url: https://www.desertcart.pt/products/695406965-siless-max-120-mil-3mm-6-sqft-car-sound-deadening
store_origin: PT
region: Portugal
---

# 20-30% more effective than competitors 120 mil (3mm) thickness for max damping 6 sqft coverage per pack, easy peel & place Siless Max 120 mil (3mm) 6 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (6 sqft)

**Brand:** siless
**Price:** € 148.20
**Availability:** ✅ In Stock

## Summary

> 🔇 Silence is the new luxury—make your car the envy of every road warrior!

## Quick Answers

- **What is this?** Siless Max 120 mil (3mm) 6 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (6 sqft) by siless
- **How much does it cost?** € 148.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/695406965-siless-max-120-mil-3mm-6-sqft-car-sound-deadening)

## Best For

- siless enthusiasts

## Why This Product

- Trusted siless brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Advanced Bmastic Formula:** Cutting-edge sound deadening tech that’s 20-30% more effective than traditional materials, engineered for serious car enthusiasts.
- • **Cost-Effective Luxury Upgrade:** Premium soundproofing without the premium price tag—upgrade your car’s vibe without breaking the bank.
- • **Versatile Application Anywhere:** Perfect for floors, doors, trunks, roofs, and more—stick it anywhere to crush road noise and elevate your driving experience.
- • **Effortless Peel & Stick Installation:** No adhesives or sprays—just trim, peel, place, and roll for a flawless fit every time.
- • **Precision Thickness for Ultimate Silence:** At 120 mil, Siless Max delivers industry-leading vibration dampening that transforms your ride into a quiet sanctuary.

## Overview

Siless Max 120 mil (3mm) is a high-performance automotive sound deadening mat covering 6 sqft per pack. Featuring an advanced Bmastic formula, it offers 20-30% better noise and vibration reduction than competitors. Easy to install with peel-and-place application, it adheres to all interior surfaces without messy adhesives. Ideal for car enthusiasts seeking a cost-effective upgrade to eliminate road noise and enhance audio quality.

## Description

Sound Deadening is one of the most effective things you can do to your car to improve sound quality and eliminate road noise. SILESS was originally designed for the automotive industry and engineered for car soundproofing and sound dampening. By reducing or dampening sound vibration in the metal panels of your car, you can eliminate road noise. Whether you are trying to improve the quality of your car stereo or give your vehicle that “luxury car” feel, SILESS is the ideal material. Unlike some other companies, who use repurposed asphalt roofing materials, SILESS created industry approved Bmastic technologically advanced formulation that is lightweight, easy to cut, super sticky, and 20-30% more effective than any competitors on the market. Some companies use technology and processes created over 10 years ago, and selling their products at a price 3 times higher than Siless. SILESS will install easily and stick to all and any interior surfaces, such as; floors, doors, roof, hood, trunk lid, quarter panels and will easily stick to a any other surface and will stay in place without any special preparation, and without any messy drippings and odor. Installing together SILESS VIBRO and SILESS LINER - such as SILESS 157 mil and you’ve got a ride with even more noise-blocking outcome. First layer of SILESS VIBRO provides 65% off road noise and vibrations and then second layer of SILESS LINER provides 35% coverage from excessive heat. Together, it is ULTIMATE SOLUTION for your sound dampening needs. Finally, SILESS today - the most advanced, industry approved, ultimate sound dampening material on the market.

Review: This stuff is great, Really made a difference under the hood of our motorhome to keep engine noise down. Easy to apply and sticks like glue. Can be cut with scissors.
Review: I don’t have a sound system, but I have an older car, a 2004 Corolla, and road noise is an issue. I installed this inside my door panels and trunk and the difference in sound is AMAZING. So many people get in and say my car “sounds good”, “doesn’t sound cheap”. It was easy to use and install with the roller (purchased separately). Worth every penny!

## Features

- ★ Siless MAX VIBRO 120 mil is ultimate quality sound deadening insulation. Designed for the automotive industry as an industrial sound damping material for applications that need extreme performance, it is well suited to the demanding car enthusiast as well.
- ★ Advanced Formulation - SILESS MAX VIBRO Damping Material consists of newly invented Bmastic, technologically most advanced and efficient sound deadening composition on the market today.
- ★ Value - SILESS VIBRO Damping Material is just priced to be cost effective, when compared to similar products on the market. Car soundproofing does not have to be expensive to work!!
- ★ Ease of Installation — SILESS VIBRO Damping Material is easy to install with a “peel and place” application. Simply trim the pieces to fit, peel and place and hand roll to ensure good adhesion. No messy spray-on paints or adhesives are needed to install this product.
- ★ SILESS VIBRO specifications — Thickness 120 mil/ 0.12 inches/ 3mm, Coverage area - 6 ft². The installation instructions are included in the package but a roller isn't.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CXZLJSHF |
| Batteries Required? | No |
| Batteries included? | No |
| Coverage | 6 square feet |
| Customer Reviews | 4.7 4.7 out of 5 stars (29) |
| Date First Available | 14 Jun. 2024 |
| Item Weight | 1.75 kg |
| Item model number | 6 sqft |
| Part Number | VAR12030MIL |
| Product Dimensions | 25.4 x 19.3 x 0.25 cm; 1.75 kg |
| UPC | 659821204847 |

## Product Details

- **Brand:** Siless
- **Item thickness:** 1.2E+2 Mils
- **Manufacturer:** Bema Group Inc.
- **Material:** Bmastic
- **Product dimensions:** 25.4L x 19.3W centimetres

## Images

![Siless Max 120 mil (3mm) 6 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (6 sqft) - Image 1](https://m.media-amazon.com/images/I/413pOyoKk3L.jpg)
![Siless Max 120 mil (3mm) 6 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (6 sqft) - Image 2](https://m.media-amazon.com/images/I/41VTFmmI+yL.jpg)
![Siless Max 120 mil (3mm) 6 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (6 sqft) - Image 3](https://m.media-amazon.com/images/I/41pKZ02NZJL.jpg)
![Siless Max 120 mil (3mm) 6 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (6 sqft) - Image 4](https://m.media-amazon.com/images/I/51HAF5r1kkL.jpg)
![Siless Max 120 mil (3mm) 6 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (6 sqft) - Image 5](https://m.media-amazon.com/images/I/51bS57Ox5uL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***M on 14 November 2025*

This stuff is great, Really made a difference under the hood of our motorhome to keep engine noise down. Easy to apply and sticks like glue. Can be cut with scissors.

### ⭐⭐⭐⭐⭐ Review
*by T***T on 7 November 2025*

I don’t have a sound system, but I have an older car, a 2004 Corolla, and road noise is an issue. I installed this inside my door panels and trunk and the difference in sound is AMAZING. So many people get in and say my car “sounds good”, “doesn’t sound cheap”. It was easy to use and install with the roller (purchased separately). Worth every penny!

### ⭐⭐⭐⭐ Review
*by J***E on 30 September 2025*

I have probably used around 30 plus boxes of this deadner in my build . It works great it's affordable compared to some of the other brands that are about the same why pay more when you can save money . There's several guys on my car audio team that uses it to.

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-01-23*