3" SS Cat-Back Exhaust

The COBB Tuning SS 3" Cat-Back Exhaust system is engineered to enhance the performance and sound of your 2011-2014 Subaru WRX Hatch or 2008-2014 Subaru STI Hatch. It features a 3-inch diameter, straight-through muffler design that significantly reduces exhaust back-pressure compared to traditional chambered mufflers. This design optimizes exhaust flow, leading to improved performance. It is designed as a direct replacement for the OEM system and offers perfect fitment with either the Subaru factory downpipe or the COBB 3" SS Downpipe. The exhaust gasses are guided through the 3-inch tubing into a 24-inch wide muffler section with a reversed Y merge, splitting the flow into two 2.5-inch outlets. This cat-back exhaust is not an emissions-related part and can be used on emission-controlled vehicles.