13-18 Focus ST Ecoboost MRT RD

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

MRT Part# 91J103 Loudness: 9 Drone: 2 Performance: 8

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 RD (Resonator Delete) Exhaust system has a loud, deep muscle car sound and is handcrafted in corrosion-resistant 2.5" T304 Stainless Steel. This is a Resonator Delete straight pipe replacement exhaust system for your Focus. MRT engineered this system with the best sound to match your 13-18 Focus ST. It provides increased performance from increased exhaust flow. RD is the loudest Focus ST MRT exhaust with 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 Ecoboost

Hear the Difference
  • How does it sound? The MRT Focus ST RD Exhaust #91J103 has a loud, deep muscle 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: 2 Write a review »

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.