HKS 120mm Tip as seen on the HKS HI POWER SERIES

Diameter of Silencer is 115.2mm

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 .

HKS 3306-RA071