Cobb Tuning Subaru 02-07 WRX / STI SS 3" Cat-Back Exhaust - 512100 89mm but in a common 52mm

but in a common 52mm size for easy mounting

PROPERTIESViscosity grade SAE J 300 5W-30Density at 20°C (68°F) ASTM D1298 0

This COBB Tuning exhaust system conforms to the SAE dictated 95-decibel exhaust noise level limit enforced by California

IP65-rated enclosure is dust-tight and water-resistant

Cobb Tuning Subaru 02-07 WRX / STI SS 3" Cat-Back Exhaust - 512100 89mm but in a common 52mmEMISSIONS This part is not an emissions related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION The COBB catback exhaust for the WRX & STI does not deviate from the factory emissions equipment and conforms to the SAE dictated 95 decibel exhaust noise level limit enforced by California, as well as other states in the US. This system is modeled after the stock factory exhaust fitment locations, therefore making it an easy