Injen 12-15 Honda Civic Si 2.4L 4cyl SS Axle-back Exhaust

If you're looking to give your 2012-2015 Honda Civic Si a more aggressive sound and a bit more power, this Injen axle-back exhaust system is a solid choice. It's designed to replace the factory muffler section, giving you a noticeable change in exhaust note and a touch of performance improvement without needing to replace the entire exhaust system.

Injen builds these systems from 100% 304 stainless steel, which means it's going to hold up well against rust and corrosion over time. The tubing is CNC mandrel-bent, ensuring smooth airflow all the way through, which helps with both sound and power. They've also included a resonated muffler with a polished, rolled tip for a clean JDM-inspired look. Installation is made easier with investment cast flanges and custom hangers, and everything you need, including the hardware, comes in the box. This system is dyno-proven to add up to 7 horsepower and 6 lb-ft of torque, complementing the factory engine and Injen's own intake systems.

This axle-back system is designed for a direct fit, meaning no cutting or welding is required for installation. It's handcrafted and TIG welded right here in Pomona, California, showcasing Injen's commitment to quality construction.