10-19 Flex MRT EcoFlow Axle-Back

2010 - 2019 Ford Flex EcoBoost V6 MRT EcoFlow Axle-Back Performance Exhaust System 91P900
MRT 304 Stainless Axle-back: 2010-2019 Ford Flex #91P900
MRT Part# 91P900 Loudness: 6 Drone: 2 Performance: 8

Application: 2010 thru 2019 Ford Flex Ecoboost.
Tune: None Required
Time to Install: 60 Minutes
Retail Price: $791.98
Your Price: $659.99

Price with Options: $659.99

Availability: Usually Ships in 1 to 2 Business Days

Available Options:

Product Details Technical Specs Installation Instructions
The Flex MRT EcoFlow 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 3.5" 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 EcoFlow Axle-Back 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: 2010 thru 2019 Ford Flex AND Lincoln MKT 3.5L Ecoboost

Hear the Difference
  • How does it sound? The Flex MRT EcoFlow Axle-Back #91P900 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!

91P900: 2010 - 2019 Ford Flex EcoBoost V6 MRT EcoFlow Axle-Back Sound Clip
91P900: 2010 - 2019 Ford Flex V6 MRT EcoFlow Axle-Back Sound Clip
  • 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: 3 Write a review »

5 of 5 Adds some Pep! July 15, 2021
Reviewed by: John from Las Vegas  
Love my Flex but it's getting old. This exhaust gave it some more pep and makes it more fun to drive!

5 of 5 Easy install, sounds great January 25, 2021
Reviewed by: Zachary from Connecticut  
Installed these with a friend and took about 30 min. All you need is a saws all, a good level eye and a couple beers. Tone is nice and always enjoy the cold starts.

5 of 5 MRT Axle-Back Exhaust August 11, 2020
Reviewed by: Jonathon from TN  
Installed on a 2013 Flex Ecoboost and it sounds great. Driveway installation was easy.