COBB Sound Suppression Chamber 2016-2018 Ford Focus RS YMM_2009_BMW_135I The retention-style mounting system installs

The retention-style mounting system installs quickly and easily in under a minute without tools or double-sided tape

and silicone throttle-body coupler

HKS increases the core size over stock to allow greater airflow

Track and Street Performance: Optimizes airflow when paired with rear diffusers

COBB Sound Suppression Chamber 2016-2018 Ford Focus RS YMM_2009_BMW_135I The retention-style mounting system installsThe Ford Sound Suppression Chamber Focus RS 2016 2018 is a direct replacement to the factory sound suppression resonance chamber. Its purpose is to reduce the intake whistle sounds that accompany aftermarket intakes. This unit is aluminum with an anodized black finish. Larger aftermarket intakes create an imbalance with the factory sound suppression chamber resulting in an audible whistle. The COBB Ford Sound Suppression Chamber increases volume over