13-18 Focus ST Ecoboost MRT KR Axle-Back

2013 - 2018 Ford Focus ST MRT KR Axle-Back Performance Exhaust System 91J101
MRT 304 Stainless Axle-back: 2013-2018 Focus ST #91J101
Alternative Views

MRT Part# 91J101 Loudness: 10 Drone: 2 Performance: 8

Application: 2013 thru 2018 Focus ST Ecoboost
Tune: None Required
Time to Install: 60 Minutes
Retail Price: $633.58
Your Price: $527.99

Price with Options: $527.99

Availability: Usually Ships in 1 to 2 Business Days

Available Options:

Product Details Technical Specs Installation Instructions
The Focus ST MRT KR Axle-Back has a loud, deep muscle car sound and is handcrafted in T304 Stainless Steel. This system includes 2.5" mandrel bent tube and dual 4" double wall, polished T304 stainless steel tips with beveled edges. This system is engineered for the best sound to match your vehicle and provides increased performance from increased exhaust flow. The KR Axle-Back is the Loudest MRT Axle-back for your Focus ST. It has just enough exhaust presence with 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. 2.0L 4-cylinder

Hear the Difference
  • How does it sound? The Focus ST MRT KR Axle-Back #91J101 has a loud, deep muscle car 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!

91J101: 13-18 Focus ST Ecoboost MRT KR Axle-Back Sound Clip
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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