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2015 - 2024 Mustang EcoBoost Street Race Axle Back 91U903

MRT 304 Stainless Axle-back: 2015+ Mustang Ecoboost #91U903

2015 - 2024 Mustang EcoBoost Street Race Axle Back 91U903 - Image 1 of 0
2015 - 2024 Mustang EcoBoost Street Race Axle Back 91U903 - Video 2 of 1
2015 - 2024 Mustang EcoBoost Street Race Axle Back 91U903 - Image 1 of 0
2015 - 2024 Mustang EcoBoost Street Race Axle Back 91U903 - Video 2 of 1
2015 - 2024 Mustang EcoBoost Street Race Axle Back 91U903 - Image 1 of 0
2015 - 2024 Mustang EcoBoost Street Race Axle Back 91U903 - Video 2 of 1

2015+ Mustang EcoBoost MRT Street Race Axle Back

1 Reviews
Retail Price: $719.99
$
$527.99
You Save: $
MRT Part# 91U903 Loudness: 10 Drone: 2 Performance: 8

Application: 2015 thru 2024 Mustang 2.3L EcoBoost, 2015-2017 Mustang 3.7L V6
Tune: None Required
Time to Install: 60 Minutes
Choose your options:
Available Options:
Item Code: 91U903
Usually Ships in 1 to 2 Business Days

This product qualifies for FREE SHIPPING!

The Mustang MRT Street Race Axle Back system has a loud, deep muscle car sound and is handcrafted in corrosion resistant T304 Stainless Steel. Base systems include T304 polished SS 4" tips and 2.5" mandrel bent tube. Black Ops black matte tip finish is available for an additional fee. This system is engineered for the best sound to match your Mustang and provides increased performance from increased exhaust flow. The MRT Street Race Axle Back is the loudest MRT axle-back. Itis louder than the Sport Touring Axle Back. This Badass series has just enough exhaust presence with elevated sound to Get Noticed, Feel the Performance note and packaged in a design without excessive drone.

Application:2015 thru 2024 Mustang 2.3L EcoBoost, 2015-2017 Mustang 3.7L V6

Hear the Difference
  • How does it sound? The MRT Mustang Street Race Axle Back Axle-Back #91U903 has a balanced, 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 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!

  • DIY installation for the backyard mechanic
  • T304 Stainless Steel for the best corrosion resistance
  • Engineered, designed and manufactured in the USA
Product Quality
  • What kind of steel is it made from? Corrosion-resistant T304 stainless steel.
  • Where is it made? Developed and handcrafted in-house at MRT facility in Plymouth, Michigan, USA.
  • How long is the Warranty? Limited Lifetime Warranty (See Warranty Page for Details)
Feel the Performance
  • What is the muffler design? Straight through design to provide maximum exhaust gas flow.
  • What is the tube diameter? A large 2.5" tube is used for reduced exhaust flow restrictions.
  • What are the performance gains? Reducing restriction and maximizing flow provides for noticeable gains.
Get Noticed
  • What kind of tip is it? Dual 4" double wall, polished T304 stainless steel tips with beveled edges. .
  • What are my tip finish options? Stylish Polished Stainless Steel or Black Ops Matte Ceramic.
  • How do I get noticed? Great sound and great looks turn heads and get positive comments!



  • Can I install this myself? Yes, MRT engineers this Premium Exhaust System for a simple do-it-yourself (DIY) installation.
  • How long does it take to install? Installation time is about 1 hour and requires only common hand tools.
  • What is included? All necessary hardware included.



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      Reviews

      Average Rating:
      ( 1 )
      Nick from NY
      April 12, 2023
      Easy Makeover
      Recently bought my eco boost love the car but it needed some exhaust tone it was to quiet.Twenty-minute job and the MRT axle back kit was on the car,while it's not the V8 rumble it makes the Eco sound good.
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