2013-18 Focus ST Ecoboost MRT Sport Touring Exhaust

2013 - 18 Ford Focus ST MRT Sport Touring Resonator Delete #91J103
MRT 304 Stainless Resonator Delete: 2013-2018 Focus ST #91J103
Alternative Views

MRT Part# 91J103 Loudness: 5 Drone: 1 Performance: 5

Application: 2013 thru 2018 Focus ST Ecoboost
Tune: None Required
Time to Install: 60 Minutes
Retail Price: $71.99
Your Price: $59.99

Availability: Usually Ships in 1 to 2 Business Days

Product Details Technical Specs Installation Instructions
The MRT Focus ST Sport Touring Exhaust system is the best bang for your buck and a first go-to mod for your hot hatch! Reduce back pressure, increase exhaust flow and performance with this precision designed replacement for the mid-muffler. This kit will increase the overall exhaust presence for a step-above stock sport performance sound with well pronounced rumbles at idle and an enhanced growl when accelerating.

MRT system for the Ford Focus ST are handcrafted and built to last with corrosion-resistant 2.5" T304 Stainless Steel. The MRT sport touring exhaust sound level is managed by the driver's gas pedal and has just enough elevated sound to Get Noticed, plenty of opportunity to Feel the Performance, and packaged in a design without excessive drone.

Application: 2013 thru 2018 Focus ST 2.3L Ecoboost

If you're looking for more sound with a fuller, deeper, more aggressive note check out the loudest MRT exhaust for your Focus ST -- MRT Extreme Cat Back exhaust (Part # 91J102). For a street race, here I come sound the MRT Street Race Axle Back is the system for you (MRT Part # 91J101).

Hear the Difference
  • How does it sound? The MRT Focus ST RD Exhaust #91J103 has a pronounced, rumble sound.
  • Is there drone or resonance? The drone is noticeable but tolerable.
  • What if I step on it? Wide-open throttle increases exhaust loudness and tone to an aggressive performance sound.
Are you located close to Plymouth, MI and need your MRT aftermarket exhaust installed? Call MRT at 734-455-5807 to make an appointment today!

2013-2018 Focus ST MRT RD 91J103
91J101 & 91J103: 13-18 Focus ST MRT Axle back and RD
  • DIY installation for the backyard mechanic
  • T304 Stainless Steel for the best corrosion resistance
  • Engineered, designed and manufactured in the USA

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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 4 Write a review »

5 of 5 Flawless Kit! June 2, 2023
Reviewed by: Levi from Michigan  
Came with everything needed and it all fit like it should, thank you for providing this perfect bit of pipe! Looks forward to ordering more MRT products!


5 of 5 A nice piece of pipe! May 15, 2023
Reviewed by: Tofer from Rhode Island  
Definitely a high-quality part. It was the appropriate size and gave the stock exhaust just the right amount of aggressiveness it was missing.  The only problem I had was that the clamp provided for the engine side was barely large enough to fit around the piping. It ended up coming apart and was difficult to reassemble, so I ended up using a better fitting clamp I had on-hand.

5 of 5 Great Price. Great Sound. December 21, 2021
Reviewed by: Tim from CO  
Great piece and great sound. MRT is T304 when others are 409 stainless so when I was deciding what to order, it was a no brainer to get MRT.

5 of 5 Simple December 8, 2020
Reviewed by: Nick from Indiana  
Love it! Easy to order. Shipped right away. I recommend.