Injen 2016+ Honda Civic 1.5L Turbo 3in Exhaust

Starting with the 3-inch diameter, CNC mandrel-bent 304 stainless steel tubing, this Injen Super SES cat-back exhaust system is built for performance on your 2016-2021 Honda Civic 1.5L Turbo Sedan. Mandrel bending means the pipe keeps its shape and size all the way through, ensuring smooth, unrestricted airflow. This is key for getting the most out of the engine, especially when paired with a performance intake system, as Injen tunes these systems to work together for maximum horsepower and torque gains across the entire power band.

The engineers at Injen have crafted this system with investment cast stainless steel flanges and TIG welded every joint by hand right here in the USA. This attention to detail not only ensures strength and durability but also makes for a straightforward installation, as all the necessary hardware, tubing, and hangers are included. The dual resonator, no-muffler design is specifically tuned to produce a distinct, aggressive exhaust note that complements the power improvements. You'll also notice the 3.50-inch polished stainless steel tip with rolled edges, giving your Civic a classic JDM look.

This system is designed for the Sedan model only and does not fit Coupe or Hatchback versions. It's a complete cat-back setup, meaning it replaces everything from the catalytic converter back, and requires no cutting or welding for installation. You can expect about an 8.0 HP and 7.0 ft-lbs of torque increase, verified on the dyno.