# Injen 16-18 Ford Focus RS 3in Cat-Back Stainless Steel Exhaust w/ 4in Black Chrome Tips

The 2016-18 Focus RS is a machine the demands attention and respect wherever it's driven. The Injen Technology cat-back exhaust system compliments the Focus RS with impressive power, gorgeous looks, and a distinct sound that is unmatched. , , Unlike our competition that uses stepped down tubing, the Injen Technology system is a full 3"cat-back unit that is mandrel bent using only the best 304 stainless steel available. Another unique feature of the Injen cat-back exhaust system for the RS is that is utilizes individual resonators instead of a single traverse style muffler. Not only does this provide a unique sound, but also help to free up power throughout the RPM range. Injen Technology also decided to bypass the factory exhaust valve and provides a custom exhaust valve bypass module (P/N 2002) with every Injen Focus RS exhaust system. This allow you to enjoy that rich, crisp sound of your RS whenever you want. , , The rear of the Injen Technology RS cat-back system is a work of art and employs multiple slip fittings to allow an infinite amount of adjustment for a precise fit right out of the box. Dual 4"black chrome exhaust tips complete the exhaust and provide a finished look. , , Quality Construction; This Injen Technology exhaust system is constructed from 3"mandrel-bent 304 stainless steel tubing for maximum flow and long service life. From there, every aspect of the system is hand TIG-welded by our experts in our Pomona, California headquarters. , ,

-   If you're looking to improve sound, power, and looks then this is the system for you!
-   Features dual Injen Resonators to deliver a clean, crisp, distinctively Injen sound
-   Hand Crafted and TIG Welded to Perfection for Strength and Durability
-   Stainless Steel Investment Cast Flange for a Fast and Easy Install
-   Premium Stainless Steel Hardware and Hangers for a simple install
-   Unique and Fully Adjustable design for perfect fit and alignment
-   Full 76MM piping made from premium 304 SS Mandrel-Bent Tubing
-   Dyno Proven gains of up to 16 hp and 14 lb-ft. of torque
-   Injen's Gen2 Axle Back design for the Focus RS
-   Beautiful dual 4.5"black chrome exhaust tips
-   Designed and Manufactured in Pomona, CA
-   No Cutting or Welding Required
-   CARB Exempt- NO

This Part Fits:

Year

Make

Model

Submodel

2016-2018

Ford

Focus

RS

## Details

- **Price:** 2000.16 CAD
- **Vendor:** Injen
- **Type:** Catback

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2000.16 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - Mounted
- Photo - Unmounted
- User 4
- Photo - Unmounted
- Photo - out of package
- Photo - out of package
- Photo - Unmounted
- Photo - out of package

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/injen-16-18-ford-focus-rs-3in-cat-back-stainless-steel-exhaust-w-4in-black-chrome-tips)
> Updated: 2026-06-28