Injen Performance Exhaust System for the 2017-2018 Honda Civic Si (SES1581TT) 40030 ambient air that it requires

ambient air that it requires Perhaps youve upgraded to an STI scoop and want to really make use of that extra air Maybe youve already got an STI splitter but want to squeeze every ounce of performance out of your top mount

Seibon Carbon’s manufacturing expertise

An Air/Oil Separator has one job

All new stainless steel clamps and silicone couplers are included for a simple installation

Gain 14 ft/lbs Torque*

Injen Performance Exhaust System for the 2017-2018 Honda Civic Si (SES1581TT) 40030 ambient air that it requiresThe 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