STI PERFORMANCE MUFFLER (Low back pressure) For SUBARU BRZ (ZC) ST44300AS020 MF21S MR Wagon Sport 2WD Model MD12S

Model MD12S

Model ML21S

greatly improve the fatigue durability

Notices 5MT

STI PERFORMANCE MUFFLER (Low back pressure) For SUBARU BRZ (ZC) ST44300AS020 MF21S MR Wagon Sport 2WD Model MD12SBrand STI Product PERFORMANCE MUFFLER (Low back pressure) Product Number ST44300AS020 Description This high performance muffler boasts low back pressure and an approximately 13% lower airflow resistance compared to the standard models. This muffler has a 120 mm double walled, slash cut tail pipe with one exhaust to the left and right. It gives the rear of the vehicle a high quality sporty look. It uses a dual structure with a tubular pre silencer and