Injen SES1581TT Cat-Back exhaust 2017-2020 Honda Civic Si Sedan L4-1.5L Turbo

  • $978.59
    Unit price per 
Shipping calculated at checkout.


Injen SES1581TT Cat-Back exhaust 2017-2020 Honda Civic Si Sedan L4-1.5L Turbo

Fits Civic Si Sedan models ONLY

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.


  • Center exit design fits with factory rear valance
  • Dyno Proven gains of up to 11 hp and 10 lb?ft of torque
  • Full 76MM piping made from premium 304 SS Mandrel-Bent Tubing
  • Features Injen’s integrated resonator for crisp, clean sound
  • Beautiful dual 4.0” burnt titanium exhaust tips
  • Stainless Steel Investment Cast Flange for a Fast and Easy Install
  • Hand Crafted and TIG Welded to Perfection for Strength and Durability
  • Stainless Steel Hardware and Hangers for a simple install
  • No Cutting or Welding Required

If you're looking to improve sound, power, and looks then this is the system for you!
Designed and Manufactured in Pomona, CA


We Also Recommend