Cobb 11-14 Subaru WRX Hatch / 08-14 STi Hatch 3in Catback Exhaust

Constructed from 3-inch diameter, mandrel-bent 304 stainless steel tubing, this COBB cat-back exhaust system is built to handle the demands of your 2011-2014 Subaru WRX Hatch or 2008-2014 Subaru STi Hatch. The larger 3-inch piping offers a significant improvement in exhaust flow compared to the stock system, which can help your engine breathe more freely. This enhanced flow often translates to a more aggressive exhaust note and can contribute to a slight increase in power, especially when paired with other engine modifications. The use of 304 stainless steel means this system is well-built to resist corrosion and maintain its appearance over time, even in harsh conditions.

COBB designed this cat-back system to integrate smoothly with your vehicle's factory exhaust manifold and catalytic converter, making installation more straightforward. The system includes a dual-muffler setup that COBB has tuned to produce a deep, resonant tone without excessive drone at cruising speeds. You'll notice a more satisfying sound during acceleration and a refined note when you're not pushing the engine hard. The polished tips add a clean, finished look to the rear of your hatchback.

When installing this cat-back exhaust, it's a good idea to have a helper and ensure you have the necessary tools for unbolting the factory system and securing the new one. While it's designed as a direct bolt-on replacement, referring to the manufacturer's installation instructions is always recommended for the best results. This system is a popular choice for WRX and STi owners looking to enhance both the sound and performance of their turbocharged boxer engine.