The HKS Inner Silencer provides an easy way to lower the sound output level on your HKS Hi-Power Exhaust System. Simply bolts right on to the pre-existing holes on the muffler tip. 100% genuine HKS product. Part# 3306-RA071. Made by HKS Co., Ltd. Japan.
Fits HKS Hi-Power Exhausts with 120mm / 4.75" muffler tip.
*Will not fit HKS Hi-Power Carbon-Ti Exhausts.