Description
The Injen Technology engineers are experts when it comes to performance, PERIOD. From Cars to Trucks to Powersports, Injen has a variety of exhaust systems to choose from. All of Injen Technology Performance exhaust systems are constructed from mandrel bent stainless steel tubing Mandrel-bending ensures the tubing maintains its shapes and size throughout the entire length, providing smooth, unrestricted airflow. From the Investment cast flanges to the custom hangers, all Injen exhaust systems are 100% TIG welded and handcrafted in the USA and include all tubing, mufflers, and hardware necessary for a hassle free installation. Each system is uniquely designed to offer an aggressive sound that brings out some massive power. Like all other Injen products, the Injen exhaust systems are proudly built in Pomona, CA.
Cat-Back Exhaust System; Incl. Tubing/Mid Section Pipe w/Resonator/Dual 4 in. Titanium Tips/Hardware; HP Gains +11 HP/Torque Gains +10 ft./lbs.; 304 Stainless Steel; Polished;
Fits Civic Si Sedans Only
- If you’re looking to improve sound, power, and looks then this is the system for you!
- Hand Crafted and TIG Welded to Perfection for Strength and Durability
- Stainless Steel Investment Cast Flanges For a Fast and Easy Install
- Full 76MM piping made from premium 304 SS Mandrel-Bent Tubing
- Features Injen’s integrated resonator for crisp, clean sound
- Dyno Proven gains of up to 11 hp and 10 lb?ft of torque
- Center exit design fits with factory rear valance
- Beautiful dual 4.0″burnt titanium exhaust tips
- Premium Stainless Steel Hardware and Hangers
- Manufactured in Pomona, California USA
- Designed And Made In Pomona; CA
- Fits Civic Si Sedan models ONLY
- No Cutting or Welding Required
Fitment:
2017 Honda Civic Si
2018 Honda Civic Si
2019 Honda Civic Si
2020 Honda Civic Si

















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