84% off our B8 Trunk Sound Deadening Kit

Engineered specifically for the B8 A4 and S4, our Form-Fit Trunk Sound Deadening Kit is designed to reduce the transmission of road noise, chassis vibrations, and irritating exhaust drone. Increase comfort, eliminate road noise, and enjoy a more comfortable ride!

Pre-cut and precisely labeled, each multi-piece section of this sound deadening kit is tailored to the contours of the B8 S4 trunk, including the floor and spare tire well. Installation couldn't be more simple: peel and stick-no cutting, no trimming, and no guesswork required. The included 4mm thick sound deadening material includes exact cutouts for all trunk obstructions-wiring, mounting studs, clips, and more-ensuring a true factory-level installation.

Tested across four independent conditions, our Form-Fit Trunk Sound Deadening Kit achieved an overall noise reduction of 5 to 14 decibels, a significant drop you can hear and feel!