Multi-layer composite car sound deadening SGM Combi 4 mm is a professional, high-rigidity frame vibration damper from Classic Line SGM products with an innovative two-layer structure on a 90-micron foil. It utilizes a synergistic combination of two specialized mastics: a rigid bitumen-polymer layer for structural integrity and sound pressure resistance, and a high-adhesion butyl rubber layer for secure bonding and easier installation. This unique composition creates a reinforced damping effect where the mass of the bitumen and the elasticity of the butyl rubber work together to counteract low-frequency resonances in the vehicle’s body. With stable performance from -40°C to +100°C and an easy-to-install backing with siliconized release paper, SGM Combi is the ideal solution for all areas subjected to extreme vibration loads.

Multi-layer composite car sound deadening SGM Combi 4 mm vibration damper is engineered to deliver maximum sound insulation performance in both cars and special-purpose vehicles. Recommended for high-vibration areas, it is also ideal for preparing vehicles for SPL (Sound Pressure Level) competitions. It effectively reinforces the body structure, combating low-frequency resonances from powerful audio systems and micro-vibrations generated under all possible operating conditions.