HKS 3306-RA071 120mm Matte Black Inner Muffler Silencer 

HKS Inner Muffler Silencers give car enthusiasts the option to lower the sound output of an exhaust system. These silencers are inserted into the tip section of the muffler, reducing noise levels of an exhaust by an average of 7db. They can be inserted for daily street use or removed for maximum performance when visiting the track. HKS Inner Muffler Silencers are made from high quality stainless steel and are available for 120mm, 115mm and 96mm diameter tip mufflers.