Injen Cat-Back Exhaust System 3" Stainless Steel With 4" Black Chorme Tips Focus RS 2016-2018
Injen 3" Stainless Steel Cat-Back Exhaust System with 4" Black Chrome Tips for 2016, 2017 and 2018 Focus RSs.
Simultaneously increase the exhaust performance and overall output of your 2016-2018 Focus RS while adding a throaty, aggressive tone to your exhaust with this Injen SES9004 3" Stainless Steel Cat-Back Exhaust System with 4" Black Chrome Tips. This system will impact both your horsepower and torque performance.
Features and Benefits:
- For 2016-2018 Focus RSs
- Increases of up to 16 Horsepower and 14 Pounds of 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" Dual Black Chrome Tips
- Hand Crafted and Tig Welded to Perfection
- Included Exhaust Valve By-Pass Module to prevent "CEL"
- Proudly Made in the USA
- Fast, Easy Install
Featuring stainless steel mandrel-bent 3" tubing in a straight-through flow design, this system yields horsepower gains around 16 while adding 14 pounds per feet of torque to your ride. The enhanced interior and exterior noise levels are aggressive without venturing into irritating for the people riding in your RS. Made in the USA out of 304 polished stainless steel, this aftermarket exhaust system includes 4" black chrome dual exhaust tips, investment cast flanges and a band clamp that eases the installation process. Lastly, you'll get an exhaust valve by-pass module that will by-pass the factory valve effectively eliminating the risk of check engine light illumination.
Kit Includes:
- (1) 5-Piece Cat-Back Exhaust
- (2) 4” Black Chrome Tips
- (3) 76mm Band Clamps
- (1) 3.00” Gasket
- (2) M10 Hex Bolt
- (2) M10 Hex Nut
- (1) Exhaust Valve Bypass Module
- (1) Black Zip-Tie
Please Note: This system does NOT have a mounting location or provisions for the factory electronics and OE exhaust valve. You will be required to install the Exhaust Valve Bypass Module and safely secure the wiring with the included Zip-Tie.
Tech Tip: The factory/OEM exhaust system must be cut in order to be removed.
California Residents: Proposition 65 Warning
Related Categories: Ford Focus ST Parts, Ford Focus RS Parts, Focus RS Exhaust
Installation Difficulty

Intermediate skill is required for this installation.











