Injen Stainless Steel Cat-Back Exhaust System

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The Injen 3" Stainless Steel Cat-Back Exhaust System with 4.5" Burnt Titanium Tips for the 2016 - 2018 Ford Focus RS is finally here!

Are you looking to increase the performance and get a more aggressive sound on your Focus RS? Well then, take a look at this 3" Stainless Steel Exhaust System by Injen Technology! The Injen Technology exhaust system will help increase horsepower and torque while also adding a truly aggressive exhaust note.

The Injen Technology 3" Stainless Steel Cat-Back Exhaust System with 4.5" Burnt Titanium Tips comes with stainless steel mandrel-bent 3" tubing in a straight-through flow design to get as much horsepower and torque as possible. The interior and exterior noise levels are truly harmonic, which means you'll love your Focus' new deep, smooth and aggressive sound after you're done installing your new system! The Injen Performance Exhaust systems is proudly made in the USA at Injen's world headquarters in Pomona, California out of 304 polished stainless steel. This system also comes with 4.5" Burnt Titanium dual exhaust tips, Investment cast Flanges and a band clamp that'll make installation a breeze. Not only that, you'll also get an exhaust valve by-pass module, that will by-pass the factory valve found on your RS, and will eliminate the risk of check engine lights!

Order your Exhaust System with 4" Black Chrome Tips for your 2016 - 2018 Focus RS today!


  • Increases Horsepower and Torque While Maintaining Efficiency
  • Stainless Steel Investment Cast Flanges For a Fast and Easy Install
  • Premium Stainless Steel Hardware and Hangers
  • 3" 304 SS Mandrel-Bent Tubing Provides a Straight-Through Flow Design
  • Show Quality Embossed Stainless Steel Resonators
  • 4" Black Chrome Tips
  • Hand Crafted and Tig Welded to Perfection
  • Included Exhaust Valve By-Pass Module to Prevent CEL and Keep Drive Mode Selection Available
  • Proudly Made in the USA