Martelius unique sound control will bring a crisp race-like sound, even with OPF filter still in place.    Fits to original OPF/GPF filter. Tubing size 3" outside diameter. Material is AISI304 s

This front muffler is the replacement for the first part in our Yaris GR catback exhaust 490065. With this muffler you can reduce the sound of the exhaust signicantly, in cases like when OPF is remove